Sunday

April 20, 2014

April 20, 2014

Posted by **ann** on Thursday, July 26, 2007 at 6:41am.

Should i solve by using substitution, elimination or multiply then use elimination?

Try adding them. Add up the left sides and the right sides (after rearranging the second equation) the x term will drop out, giving you

4x -2y = 2

-4x-y = 7

-3y = 9

y = -3

For x, substitute y=-3 into the first equation

x = (1/4)(2 +2y) = -1

**Related Questions**

algebra - I just need a quick check before I hand in my work if you would......

Algebra Multiple Choice - Hello, This is the last of questions I have for my ...

Math/Check - I have a few problems I need you to take a look at and tell me if ...

algebra - I have a few problems I need you to take a look at and tell me if I ...

Algebra - I have a few problems I need you to take a look at and tell me if I ...

Algebra/math - I have a few problems I need you to take a look at and tell me ...

Algebra/no response yesterday - I have a few problems I need you to take a look ...

algebra 2 - Nonlinear systems Solve the system by elimination. y=x^2+2 -4x-y=10 ...

Algebra - solve the linear system using substitution 4x - y=5 4x + 4y= -4 Also ...

Help please math - Solve using substitution. y = x – 2 x + y = 10 7x + 2y = - 8 ...