Posted by Tony on Sunday, December 17, 2006 at 8:35pm.
I NEED TO SOLVE FOR Y AND X
im getting rele confused on this. ok here is the prob.
x+y=5
x2y=4
equation 1 x+y=5
equation 2 x2y=4
Multiply equation 1 by 1.
Add equation 1 to equation 2. The x term cancels. Solve for y.
THEN, put the value of y into either equation and solve for x.
Finally, put the value of x and y into the OTHER equation and see if those values satisfy the equation.

MATH  Anon, Thursday, July 17, 2014 at 12:19pm
Multiplying Equation 1 by 1 you get:
xy=5
Adding that to equation 2 you get:
x y = 5
+ x 2y = 4

3y = 9
Divide both sides by 3 and you get
y=3
Put that back into either equation and you can solve for x
x+y=5
x+3=5
x+33=53
x=2
So x=2, y=3 should be the solutions.
Check this in the other equation, x2y=4
22(3) = 4
26 = 4 why yes it does! :)
Answer This Question
Related Questions
 maths algebra  HI STEVE, THANKS for your reply back it was the wrong answer ...
 maths  1x+2y=5 3x+7y=18 x= y= Multiply equation 1 by 3, add to equation 2 (...
 Math  Could someone please help me. Solve the linear equation by substitution. ...
 math  compare and contrast: below are two equations. solve each equation and ...
 chemistry...Please Help  I posted this below and received help but im still ...
 Pre Cal.Check my work?  Solve the system of equations: x  y  z = 2; x + 2y...
 Algebra  Solve each literal equations for the indicated variable D = C  s/n ( ...
 solution of an equation  can someone please give me an example of a solution of...
 Algebra 1  What is an equation of a line perpendicular to the line with ...
 algebra  how would i find an equation of a line that goes through points(1,6) ...
More Related Questions