91=7(-1+2m)

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Solution for 91=7(-1+2m) equation:


Simplifying
91 = 7(-1 + 2m)
91 = (-1 * 7 + 2m * 7)
91 = (-7 + 14m)

Solving
91 = -7 + 14m

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '-14m' to each side of the equation.
91 + -14m = -7 + 14m + -14m

Combine like terms: 14m + -14m = 0
91 + -14m = -7 + 0
91 + -14m = -7

Add '-91' to each side of the equation.
91 + -91 + -14m = -7 + -91

Combine like terms: 91 + -91 = 0
0 + -14m = -7 + -91
-14m = -7 + -91

Combine like terms: -7 + -91 = -98
-14m = -98

Divide each side by '-14'.
m = 7

Simplifying
m = 7

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