12.1-8.7+x=3.7

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Solution for 12.1-8.7+x=3.7 equation: 


Simplifying
12.1 + -8.7 + x = 3.7

Combine like terms: 12.1 + -8.7 = 3.4
3.4 + x = 3.7

Solving
3.4 + x = 3.7

Solving for variable 'x'.

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

Add '-3.4' to each side of the equation.
3.4 + -3.4 + x = 3.7 + -3.4

Combine like terms: 3.4 + -3.4 = 0.0
0.0 + x = 3.7 + -3.4
x = 3.7 + -3.4

Combine like terms: 3.7 + -3.4 = 0.3
x = 0.3

Simplifying
x = 0.3

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