2x+42=8x+78

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Solution for 2x+42=8x+78 equation:


Simplifying
2x + 42 = 8x + 78

Reorder the terms:
42 + 2x = 8x + 78

Reorder the terms:
42 + 2x = 78 + 8x

Solving
42 + 2x = 78 + 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 + 2x + -8x = 78 + 8x + -8x

Combine like terms: 2x + -8x = -6x
42 + -6x = 78 + 8x + -8x

Combine like terms: 8x + -8x = 0
42 + -6x = 78 + 0
42 + -6x = 78

Add '-42' to each side of the equation.
42 + -42 + -6x = 78 + -42

Combine like terms: 42 + -42 = 0
0 + -6x = 78 + -42
-6x = 78 + -42

Combine like terms: 78 + -42 = 36
-6x = 36

Divide each side by '-6'.
x = -6

Simplifying
x = -6

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