5x+8x-42=84-8x

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Solution for 5x+8x-42=84-8x equation:


Simplifying
5x + 8x + -42 = 84 + -8x

Reorder the terms:
-42 + 5x + 8x = 84 + -8x

Combine like terms: 5x + 8x = 13x
-42 + 13x = 84 + -8x

Solving
-42 + 13x = 84 + -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 + 13x + 8x = 84 + -8x + 8x

Combine like terms: 13x + 8x = 21x
-42 + 21x = 84 + -8x + 8x

Combine like terms: -8x + 8x = 0
-42 + 21x = 84 + 0
-42 + 21x = 84

Add '42' to each side of the equation.
-42 + 42 + 21x = 84 + 42

Combine like terms: -42 + 42 = 0
0 + 21x = 84 + 42
21x = 84 + 42

Combine like terms: 84 + 42 = 126
21x = 126

Divide each side by '21'.
x = 6

Simplifying
x = 6

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