8x-78=42

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Solution for 8x-78=42 equation: 


Simplifying
8x + -78 = 42

Reorder the terms:
-78 + 8x = 42

Solving
-78 + 8x = 42

Solving for variable 'x'.

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

Add '78' to each side of the equation.
-78 + 78 + 8x = 42 + 78

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

Combine like terms: 42 + 78 = 120
8x = 120

Divide each side by '8'.
x = 15

Simplifying
x = 15

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