9x/2+21=10-7 - solution

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Solution for 9x/2+21=10-7 equation:

x in (-oo:+oo)

(9*x)/2+21 = 10-7 // - 10-7

(9*x)/2-10+7+21 = 0

9/2*x+18 = 0 // - 18

9/2*x = -18 // : 9/2

x = -18/9/2

x = -4

x = -4

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