3x+42=2(4x-4)

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Solution for 3x+42=2(4x-4) equation:


Simplifying
3x + 42 = 2(4x + -4)

Reorder the terms:
42 + 3x = 2(4x + -4)

Reorder the terms:
42 + 3x = 2(-4 + 4x)
42 + 3x = (-4 * 2 + 4x * 2)
42 + 3x = (-8 + 8x)

Solving
42 + 3x = -8 + 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.
42 + 3x + -8x = -8 + 8x + -8x

Combine like terms: 3x + -8x = -5x
42 + -5x = -8 + 8x + -8x

Combine like terms: 8x + -8x = 0
42 + -5x = -8 + 0
42 + -5x = -8

Add '-42' to each side of the equation.
42 + -42 + -5x = -8 + -42

Combine like terms: 42 + -42 = 0
0 + -5x = -8 + -42
-5x = -8 + -42

Combine like terms: -8 + -42 = -50
-5x = -50

Divide each side by '-5'.
x = 10

Simplifying
x = 10

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