(x+5) -10 = 3 12- (x-7) = 20 -(x+84) + 213 = -16 15+ (x-3) = 2 -(x-12) – 5 = 0 100- (x+20) = 30 X+ (-13+3) = -4 (18- x) – (-12) = 20

(x+5) -10 = 3 12- (x-7) = 20 -(x+84) + 213 = -16 15+ (x-3) = 2 -(x-12) – 5 = 0 100- (x+20) = 30 X+ (-13+3) = -4 (18- x) – (-12) = 20
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