4x+18=8x-42

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Solution for 4x+18=8x-42 equation:


Simplifying
4x + 18 = 8x + -42

Reorder the terms:
18 + 4x = 8x + -42

Reorder the terms:
18 + 4x = -42 + 8x

Solving
18 + 4x = -42 + 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.
18 + 4x + -8x = -42 + 8x + -8x

Combine like terms: 4x + -8x = -4x
18 + -4x = -42 + 8x + -8x

Combine like terms: 8x + -8x = 0
18 + -4x = -42 + 0
18 + -4x = -42

Add '-18' to each side of the equation.
18 + -18 + -4x = -42 + -18

Combine like terms: 18 + -18 = 0
0 + -4x = -42 + -18
-4x = -42 + -18

Combine like terms: -42 + -18 = -60
-4x = -60

Divide each side by '-4'.
x = 15

Simplifying
x = 15

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