15-4x=42-7

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Solution for 15-4x=42-7 equation: 


Simplifying
15 + -4x = 42 + -7

Combine like terms: 42 + -7 = 35
15 + -4x = 35

Solving
15 + -4x = 35

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + -4x = 35 + -15

Combine like terms: 15 + -15 = 0
0 + -4x = 35 + -15
-4x = 35 + -15

Combine like terms: 35 + -15 = 20
-4x = 20

Divide each side by '-4'.
x = -5

Simplifying
x = -5

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