-2x+7(-x+21)=75

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Solution for -2x+7(-x+21)=75 equation:


Simplifying
-2x + 7(-1x + 21) = 75

Reorder the terms:
-2x + 7(21 + -1x) = 75
-2x + (21 * 7 + -1x * 7) = 75
-2x + (147 + -7x) = 75

Reorder the terms:
147 + -2x + -7x = 75

Combine like terms: -2x + -7x = -9x
147 + -9x = 75

Solving
147 + -9x = 75

Solving for variable 'x'.

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

Add '-147' to each side of the equation.
147 + -147 + -9x = 75 + -147

Combine like terms: 147 + -147 = 0
0 + -9x = 75 + -147
-9x = 75 + -147

Combine like terms: 75 + -147 = -72
-9x = -72

Divide each side by '-9'.
x = 8

Simplifying
x = 8

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