2.1x-8.1=3.15-5.4x

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Solution for 2.1x-8.1=3.15-5.4x equation:


Simplifying
2.1x + -8.1 = 3.15 + -5.4x

Reorder the terms:
-8.1 + 2.1x = 3.15 + -5.4x

Solving
-8.1 + 2.1x = 3.15 + -5.4x

Solving for variable 'x'.

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

Add '5.4x' to each side of the equation.
-8.1 + 2.1x + 5.4x = 3.15 + -5.4x + 5.4x

Combine like terms: 2.1x + 5.4x = 7.5x
-8.1 + 7.5x = 3.15 + -5.4x + 5.4x

Combine like terms: -5.4x + 5.4x = 0.0
-8.1 + 7.5x = 3.15 + 0.0
-8.1 + 7.5x = 3.15

Add '8.1' to each side of the equation.
-8.1 + 8.1 + 7.5x = 3.15 + 8.1

Combine like terms: -8.1 + 8.1 = 0.0
0.0 + 7.5x = 3.15 + 8.1
7.5x = 3.15 + 8.1

Combine like terms: 3.15 + 8.1 = 11.25
7.5x = 11.25

Divide each side by '7.5'.
x = 1.5

Simplifying
x = 1.5

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