-4x+84=42

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Solution for -4x+84=42 equation: 


Simplifying
-4x + 84 = 42

Reorder the terms:
84 + -4x = 42

Solving
84 + -4x = 42

Solving for variable 'x'.

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

Add '-84' to each side of the equation.
84 + -84 + -4x = 42 + -84

Combine like terms: 84 + -84 = 0
0 + -4x = 42 + -84
-4x = 42 + -84

Combine like terms: 42 + -84 = -42
-4x = -42

Divide each side by '-4'.
x = 10.5

Simplifying
x = 10.5

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