42-7x=-84

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Solution for 42-7x=-84 equation: 


Simplifying
42 + -7x = -84

Solving
42 + -7x = -84

Solving for variable 'x'.

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

Add '-42' to each side of the equation.
42 + -42 + -7x = -84 + -42

Combine like terms: 42 + -42 = 0
0 + -7x = -84 + -42
-7x = -84 + -42

Combine like terms: -84 + -42 = -126
-7x = -126

Divide each side by '-7'.
x = 18

Simplifying
x = 18

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