21/10=7m-5m+1/2

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Solution for 21/10=7m-5m+1/2 equation: 


m in (-oo:+oo)

21/10 = 7*m-(5*m)+1/2 // - 7*m-(5*m)+1/2

5*m-(7*m)+21/10-(1/2) = 0

5*m-7*m+21/10-1/2 = 0

8/5-2*m = 0 // - 8/5

-2*m = -8/5 // : -2

m = -8/5/(-2)

m = 4/5

m = 4/5

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