6x+3(-x-7)=-42

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Solution for 6x+3(-x-7)=-42 equation:


Simplifying
6x + 3(-1x + -7) = -42

Reorder the terms:
6x + 3(-7 + -1x) = -42
6x + (-7 * 3 + -1x * 3) = -42
6x + (-21 + -3x) = -42

Reorder the terms:
-21 + 6x + -3x = -42

Combine like terms: 6x + -3x = 3x
-21 + 3x = -42

Solving
-21 + 3x = -42

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + 3x = -42 + 21

Combine like terms: -21 + 21 = 0
0 + 3x = -42 + 21
3x = -42 + 21

Combine like terms: -42 + 21 = -21
3x = -21

Divide each side by '3'.
x = -7

Simplifying
x = -7

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