EXAMPLE:Solve forx:x 7 ¼ 9
SOLUTION:
x 7 ¼ 9
x 7 þ 7 ¼ 9 þ 7 add 7 to both sides
x¼ 16
EXAMPLE:Solve forx:xþ 8 ¼ 10
SOLUTION:
xþ 8 ¼ 10
xþ 8 8 ¼ 10 8 subtract 8 from both sides
x¼ 2
EXAMPLE:Solve:
x
4
¼ 5
SOLUTION:
x
4
¼ 5
41
1
x
41
¼ 4 5 multiply both sides by 4
x¼ 20
EXAMPLE:Solve: 6x¼ 42
SOLUTION:
6 x¼ 42
61 x
61
¼
42
6
x¼ 7
70 REFRESHER IV Equations