1-7m=-20

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Solution for 1-7m=-20 equation: 


m in (-oo:+oo)

1-(7*m) = -20 // + 20

1-(7*m)+20 = 0

1-7*m+20 = 0

21-7*m = 0 // - 21

-7*m = -21 // : -7

m = -21/(-7)

m = 3

m = 3

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