4m+7=-21

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Solution for 4m+7=-21 equation: 


m in (-oo:+oo)

4*m+7 = -21 // + 21

4*m+7+21 = 0

4*m+28 = 0 // - 28

4*m = -28 // : 4

m = -28/4

m = -7

m = -7

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