2.1=27.7-2x

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Solution for 2.1=27.7-2x equation: 


Simplifying
2.1 = 27.7 + -2x

Solving
2.1 = 27.7 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
2.1 + 2x = 27.7 + -2x + 2x

Combine like terms: -2x + 2x = 0
2.1 + 2x = 27.7 + 0
2.1 + 2x = 27.7

Add '-2.1' to each side of the equation.
2.1 + -2.1 + 2x = 27.7 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + 2x = 27.7 + -2.1
2x = 27.7 + -2.1

Combine like terms: 27.7 + -2.1 = 25.6
2x = 25.6

Divide each side by '2'.
x = 12.8

Simplifying
x = 12.8

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