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Ex: 22p132

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x/4 + 1 = 3

x/4 = 3 - 1

x/4 = 2

x = 2 * 4

x = 8


(x + 1)/4 = 3

x + 1 = 3 * 4

x = 12 - 1

x = 11


x - 1 = -12

x = -12 + 1

x = -11


(x - 2)/4 = 0

x - 2 = 0

x = 2