21(2m-4)=6(4m-8)

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Solution for 21(2m-4)=6(4m-8) equation:


Simplifying
21(2m + -4) = 6(4m + -8)

Reorder the terms:
21(-4 + 2m) = 6(4m + -8)
(-4 * 21 + 2m * 21) = 6(4m + -8)
(-84 + 42m) = 6(4m + -8)

Reorder the terms:
-84 + 42m = 6(-8 + 4m)
-84 + 42m = (-8 * 6 + 4m * 6)
-84 + 42m = (-48 + 24m)

Solving
-84 + 42m = -48 + 24m

Solving for variable 'm'.

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

Add '-24m' to each side of the equation.
-84 + 42m + -24m = -48 + 24m + -24m

Combine like terms: 42m + -24m = 18m
-84 + 18m = -48 + 24m + -24m

Combine like terms: 24m + -24m = 0
-84 + 18m = -48 + 0
-84 + 18m = -48

Add '84' to each side of the equation.
-84 + 84 + 18m = -48 + 84

Combine like terms: -84 + 84 = 0
0 + 18m = -48 + 84
18m = -48 + 84

Combine like terms: -48 + 84 = 36
18m = 36

Divide each side by '18'.
m = 2

Simplifying
m = 2

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