Math Word Problems Demystified - A Self Teaching Guide

3 y¼ 9

31 y

31

¼

9

3

y¼ 3

The solution isx¼
2 andy¼3. You can check the answer.

Try These

Solve each system.

1 : 5 xþy¼ 7

2 x
 3 y¼
 4

2 : 
 4 xþ 5 y¼
 2

xþ 3 y¼ 9

3 : 4 x
 3 y¼ 1

2 xþy¼ 13

4 : x¼ 2 y

3 xþ 4 y¼ 40

5 : 2 x
y¼
 11

y¼
xþ 2

SOLUTIONS:

1. Solve the first equation fory.

5 xþy¼ 7

5 x
 5 xþy¼ 7 
 5 x

y¼ 7 
 5 x

202 REFRESHER V Systems of Equations