Algebra 1 HELP PLZ!!!
posted by Margie .
Use the Substitution method to solve the system of equations.
x + y = 4
x  y = 2
PLz HELP!!
I'M NOT BOB BUT I CAN HELP
ITS REALLY SIMPLE ALGEBRA
X + Y = 4......EQN 1
X  Y = 2.....EQN 2
From EQN 2, let
x = 2 + y
Substitute that into EQN 1
x  y = 4
(2+y) + y= 4
2 + 2y= 4
2y = 42
y = 6/2
y = 3
SUBST y= 3 in EQN 2
x (3) = 2
x + 3 = 2
x = 23
x= 1
Therefore
y = 3 and x = 1
x + y = 4
(2+y) + y= 4
2 + 2y= 4
2y = 42
y = 6/2
y = 3
Thanks,what abou this one?
Use the Substitution method to solve the system of equations.
x + y = 10
y = x + 8
Thanks,what abou this one?
Use the Substitution method to solve the system of equations.
x + y = 10
y = x + 8
just use the ones she helped you with before.
minus y on each side of one equation (IE x+y=10 is now x=10y.
then fill in the 10y for x in the second equation.
May be 2
help
x+y=10
y=x+8
I think it goes like this
x+x+8=10
2x+8=10
2x=108
2x=2 divide both sides by 2
x=1
1+y=10
y=101
y=9
x+y=10 replaced 1+9=10
y=x+8 replaced 9=1+8
was this a real problem to solve, or are you just testing me?
x+y=10
y=x+8
I think it goes like this
x+x+8=10
2x+8=10
2x=108
2x=2 divide both sides by 2
x=1
1+y=10
y=101
y=9
x+y=10 replaced 1+9=10
y=x+8 replaced 9=1+8
was this a real problem to solve, or are you just testing me?
x+y=10
y=x+8
I think it goes like this
x+x+8=10 (y is replaced by x+8)
2x+8=10 (add the x's to get 2x)
2x=108 (move 8 to the other side)
2x=2 divide both sides by 2
x=1
1+y=10
y=101
y=9
x+y=10 replaced 1+9=10
y=x+8 replaced 9=1+8
was this a real problem to solve, or are you just testing me?
x + 2 = 4 x  (4) = 2
x + 2  2 = 4  2 x  (4) + 4 = 2 + 4
x = 6 x = 6
checked: checked:
(6) + 2 = 4 (6)  (4) = 2
4 = 4 2 = 2
Respond to this Question
Similar Questions

Substitution Method
Use the Substitution method to solve the system of equations. x + y = 4 x  y = 2 x + y = 4 x  y = 2 In the second equation, x= y+2 Putting that in the first.. (y+2) + y= 4 subtract two from each side, then divide each side by … 
Substitution MethodPlz help
Use the Substitution method to solve the system of equations. x + y = 4 x  y = 2 solve for x in the second equation. x= y+2 Put that in for x in the first equation: x+y=4 (y+2) + y = 4 solve for y. Then, x= y+2 i don't get it.How … 
Substitution Method in Algebra!HELP PLZ!
Use the Substitution method to solve the system of equations. 3x + y = 5 4x  7y = 10 multiply first equation by 4 multiply second equation by 3 thus both equations have same x or y value in this case it is the x value. 12x + 4y = … 
Substitution Method!PLZ HELP 2222!!
y2x=5 3yx=5 In the top equation: 1) y=2x 5 Put that in the second equation 3( ) x =5 solve for x, then put that value of x back in to 1) to solve for y. So would it be: 3(2x5)=5? 
algebra
i need help with these problems (either a solution or how to plug them into a graphing calculator): 1) Solve by substitution or elimination 4/x + 1/y + 2/z = 4 2/x + 3/y  1/z = 1 1/x + 1/y + 1/z = 4 2)Solve the system of equations … 
Algebra II
If you were to use the substitution method to solve the following system, choose the new system of equations that would result if x was isolated in the third equation. 2x  3y + z = 4 2x  2y + z = 1 x  2y + 3z = 6 5x + 7y = 6 … 
math  hw help. plz
How to I solve this linear system using method of substitution? 
Math (check plz)
y = 2x + 4 2x  y = 6 Solve the system of equations using substitution. A) (2,8) B) (2,8) C) (10,24) D) no solution < 4x + 3y = 6 4x + 2y = 14 olve the system of equations. A) x = 1/2, y = 3 B) x = 3, y = 1/2 < or D? 
math plz help ;;
1. Solve the system by any method: 2x5y=1 2xy=1 How many solutions does the system of equations below have? 
math plz help ;;
Determine the xcoordinate of the solution of the system of equations below. You may use any method: 2xy=10 x+y=2 Determine the ycoordinate of the solution for the system of equations. You may use any method. 2xy=10 x+y=2 Plz help …