2.1+m=3.1-4m

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Solution for 2.1+m=3.1-4m equation: 


Simplifying
2.1 + m = 3.1 + -4m

Solving
2.1 + m = 3.1 + -4m

Solving for variable 'm'.

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

Add '4m' to each side of the equation.
2.1 + m + 4m = 3.1 + -4m + 4m

Combine like terms: m + 4m = 5m
2.1 + 5m = 3.1 + -4m + 4m

Combine like terms: -4m + 4m = 0
2.1 + 5m = 3.1 + 0
2.1 + 5m = 3.1

Add '-2.1' to each side of the equation.
2.1 + -2.1 + 5m = 3.1 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + 5m = 3.1 + -2.1
5m = 3.1 + -2.1

Combine like terms: 3.1 + -2.1 = 1
5m = 1

Divide each side by '5'.
m = 0.2

Simplifying
m = 0.2

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