-7+1/2x=-21

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Solution for -7+1/2x=-21 equation: 


x in (-oo:+oo)

(1/2)*x-7 = -21 // + 21

(1/2)*x-7+21 = 0

1/2*x+14 = 0 // - 14

1/2*x = -14 // : 1/2

x = -14/1/2

x = -28

x = -28

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