3m+6=21

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Solution for 3m+6=21 equation: 


m in (-oo:+oo)

3*m+6 = 21 // - 21

3*m-21+6 = 0

3*m-15 = 0 // + 15

3*m = 15 // : 3

m = 15/3

m = 5

m = 5

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