posted by .

Solve the following system of equations using substitution. What is the value of y?

2x + 3y = 105
x + 2y = 65
A.15
B.25
C.40
D.65
I think it is B??

pshh. that's easy it's D!

Can you explain and show me how to work this problem?

x = 65 - 2y

2x + 3y = 105

Substitute 65-2y for x in second equation and solve for y. Insert that value into the first equation and solve for x. Check by inserting both values into the second equation.

It definitely is not D! You are right with B.

## Similar Questions

1. ### Substitution Method-Plz 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 …
2. ### Math

Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 Please get me on the correct track for 3x -4y =8 x=4, y=1 for 6x - 2y =10 x= 2, y= 1 Solve one equation for x. 3x = 4y + 8 x = (4y + 8)/3 Insert that value …
3. ### math

solve each system of equations by substitution. y=3x-9 please help explain how to solve this using substitution.

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 …
6. ### Algebra

Solve the following system of equations using the substitution method:5x-7y=-18 and 4x+3y=20
7. ### Math

Solve the following system of equations using substitution. What is the value of y?
8. ### Math

1. For the following system of equations, what is the x-value of the solution?
9. ### Math

Solve the following system of equations using substitution. What is the value of Y?
10. ### 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?

More Similar Questions