-2m=-21/5

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Solution for -2m=-21/5 equation: 


m in (-oo:+oo)

-2*m = -21/5 // + -21/5

-2*m-(-21/5) = 0

21/5-2*m = 0

21/5-2*m = 0 // - 21/5

-2*m = -21/5 // : -2

m = -21/5/(-2)

m = 21/10

m = 21/10

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