-3(4.2-3.5x)=8x-7.2

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Solution for -3(4.2-3.5x)=8x-7.2 equation:


Simplifying
-3(4.2 + -3.5x) = 8x + -7.2
(4.2 * -3 + -3.5x * -3) = 8x + -7.2
(-12.6 + 10.5x) = 8x + -7.2

Reorder the terms:
-12.6 + 10.5x = -7.2 + 8x

Solving
-12.6 + 10.5x = -7.2 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-12.6 + 10.5x + -8x = -7.2 + 8x + -8x

Combine like terms: 10.5x + -8x = 2.5x
-12.6 + 2.5x = -7.2 + 8x + -8x

Combine like terms: 8x + -8x = 0
-12.6 + 2.5x = -7.2 + 0
-12.6 + 2.5x = -7.2

Add '12.6' to each side of the equation.
-12.6 + 12.6 + 2.5x = -7.2 + 12.6

Combine like terms: -12.6 + 12.6 = 0.0
0.0 + 2.5x = -7.2 + 12.6
2.5x = -7.2 + 12.6

Combine like terms: -7.2 + 12.6 = 5.4
2.5x = 5.4

Divide each side by '2.5'.
x = 2.16

Simplifying
x = 2.16

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