-1=3(x-7)-8x

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Solution for -1=3(x-7)-8x equation:


Simplifying
-1 = 3(x + -7) + -8x

Reorder the terms:
-1 = 3(-7 + x) + -8x
-1 = (-7 * 3 + x * 3) + -8x
-1 = (-21 + 3x) + -8x

Combine like terms: 3x + -8x = -5x
-1 = -21 + -5x

Solving
-1 = -21 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
-1 + 5x = -21 + -5x + 5x

Combine like terms: -5x + 5x = 0
-1 + 5x = -21 + 0
-1 + 5x = -21

Add '1' to each side of the equation.
-1 + 1 + 5x = -21 + 1

Combine like terms: -1 + 1 = 0
0 + 5x = -21 + 1
5x = -21 + 1

Combine like terms: -21 + 1 = -20
5x = -20

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

Simplifying
x = -4

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