2.1=27.7-4x

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Solution for 2.1=27.7-4x equation:


Simplifying
2.1 = 27.7 + -4x

Solving
2.1 = 27.7 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
2.1 + 4x = 27.7 + -4x + 4x

Combine like terms: -4x + 4x = 0
2.1 + 4x = 27.7 + 0
2.1 + 4x = 27.7

Add '-2.1' to each side of the equation.
2.1 + -2.1 + 4x = 27.7 + -2.1

Combine like terms: 2.1 + -2.1 = 0.0
0.0 + 4x = 27.7 + -2.1
4x = 27.7 + -2.1

Combine like terms: 27.7 + -2.1 = 25.6
4x = 25.6

Divide each side by '4'.
x = 6.4

Simplifying
x = 6.4

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