4.2=m+3

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Solution for 4.2=m+3 equation:


Simplifying
4.2 = m + 3

Reorder the terms:
4.2 = 3 + m

Solving
4.2 = 3 + m

Solving for variable 'm'.

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

Add '-1m' to each side of the equation.
4.2 + -1m = 3 + m + -1m

Combine like terms: m + -1m = 0
4.2 + -1m = 3 + 0
4.2 + -1m = 3

Add '-4.2' to each side of the equation.
4.2 + -4.2 + -1m = 3 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + -1m = 3 + -4.2
-1m = 3 + -4.2

Combine like terms: 3 + -4.2 = -1.2
-1m = -1.2

Divide each side by '-1'.
m = 1.2

Simplifying
m = 1.2

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