-2m-21-4(m-3)=4m-(8m-5)-7m+6

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Solution for -2m-21-4(m-3)=4m-(8m-5)-7m+6 equation:


Simplifying
-2m + -21 + -4(m + -3) = 4m + -1(8m + -5) + -7m + 6

Reorder the terms:
-2m + -21 + -4(-3 + m) = 4m + -1(8m + -5) + -7m + 6
-2m + -21 + (-3 * -4 + m * -4) = 4m + -1(8m + -5) + -7m + 6
-2m + -21 + (12 + -4m) = 4m + -1(8m + -5) + -7m + 6

Reorder the terms:
-21 + 12 + -2m + -4m = 4m + -1(8m + -5) + -7m + 6

Combine like terms: -21 + 12 = -9
-9 + -2m + -4m = 4m + -1(8m + -5) + -7m + 6

Combine like terms: -2m + -4m = -6m
-9 + -6m = 4m + -1(8m + -5) + -7m + 6

Reorder the terms:
-9 + -6m = 4m + -1(-5 + 8m) + -7m + 6
-9 + -6m = 4m + (-5 * -1 + 8m * -1) + -7m + 6
-9 + -6m = 4m + (5 + -8m) + -7m + 6

Reorder the terms:
-9 + -6m = 5 + 6 + 4m + -8m + -7m

Combine like terms: 5 + 6 = 11
-9 + -6m = 11 + 4m + -8m + -7m

Combine like terms: 4m + -8m = -4m
-9 + -6m = 11 + -4m + -7m

Combine like terms: -4m + -7m = -11m
-9 + -6m = 11 + -11m

Solving
-9 + -6m = 11 + -11m

Solving for variable 'm'.

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

Add '11m' to each side of the equation.
-9 + -6m + 11m = 11 + -11m + 11m

Combine like terms: -6m + 11m = 5m
-9 + 5m = 11 + -11m + 11m

Combine like terms: -11m + 11m = 0
-9 + 5m = 11 + 0
-9 + 5m = 11

Add '9' to each side of the equation.
-9 + 9 + 5m = 11 + 9

Combine like terms: -9 + 9 = 0
0 + 5m = 11 + 9
5m = 11 + 9

Combine like terms: 11 + 9 = 20
5m = 20

Divide each side by '5'.
m = 4

Simplifying
m = 4

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