. 3x/2 - 5 = 4
. 2/3x = 8/9
. x/3 + x/4 = 42
. a/2 + 3 =5
. 3(x-5) = -21
. x/4 + 9 = 5
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3x/2 - 5 = 4
3x/2 = 9
x = 3 x 2
x = 6
2/3x = 8/9
2/8 =3x/9
2 x 3/ 8 = x
x = 3/4
x/3 + x/4 = 42
(4x + 3x)/ 12 = 42
7x = 42 x 12
x = 42/7 x 12
x = 6 x 12
x = 72
a/2 + 3 =5
a/2 = 5-3
a = 2 x 2
a = 4
3(x-5) = -21
-3x = -21
x = 21/3
x = 7
x/4 + 9 = 5
x/4 = 5 -9
x/4 = -4
x = -4 x 4
x = -16
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