-7=-21-x/4

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Solution for -7=-21-x/4 equation: 


x in (-oo:+oo)

-7 = -(x/4)-21 // + -(x/4)-21

x/4-7+21 = 0

1/4*x+14 = 0 // - 14

1/4*x = -14 // : 1/4

x = -14/1/4

x = -56

x = -56

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