-3x-4x+1-8=42

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Solution for -3x-4x+1-8=42 equation:


Simplifying
-3x + -4x + 1 + -8 = 42

Reorder the terms:
1 + -8 + -3x + -4x = 42

Combine like terms: 1 + -8 = -7
-7 + -3x + -4x = 42

Combine like terms: -3x + -4x = -7x
-7 + -7x = 42

Solving
-7 + -7x = 42

Solving for variable 'x'.

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

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

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

Combine like terms: 42 + 7 = 49
-7x = 49

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

Simplifying
x = -7

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