3m+7=4.2m+5

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Solution for 3m+7=4.2m+5 equation:


Simplifying
3m + 7 = 4.2m + 5

Reorder the terms:
7 + 3m = 4.2m + 5

Reorder the terms:
7 + 3m = 5 + 4.2m

Solving
7 + 3m = 5 + 4.2m

Solving for variable 'm'.

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

Add '-4.2m' to each side of the equation.
7 + 3m + -4.2m = 5 + 4.2m + -4.2m

Combine like terms: 3m + -4.2m = -1.2m
7 + -1.2m = 5 + 4.2m + -4.2m

Combine like terms: 4.2m + -4.2m = 0.0
7 + -1.2m = 5 + 0.0
7 + -1.2m = 5

Add '-7' to each side of the equation.
7 + -7 + -1.2m = 5 + -7

Combine like terms: 7 + -7 = 0
0 + -1.2m = 5 + -7
-1.2m = 5 + -7

Combine like terms: 5 + -7 = -2
-1.2m = -2

Divide each side by '-1.2'.
m = 1.666666667

Simplifying
m = 1.666666667

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