-7x-2(7x+9)=171

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Solution for -7x-2(7x+9)=171 equation:


Simplifying
-7x + -2(7x + 9) = 171

Reorder the terms:
-7x + -2(9 + 7x) = 171
-7x + (9 * -2 + 7x * -2) = 171
-7x + (-18 + -14x) = 171

Reorder the terms:
-18 + -7x + -14x = 171

Combine like terms: -7x + -14x = -21x
-18 + -21x = 171

Solving
-18 + -21x = 171

Solving for variable 'x'.

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

Add '18' to each side of the equation.
-18 + 18 + -21x = 171 + 18

Combine like terms: -18 + 18 = 0
0 + -21x = 171 + 18
-21x = 171 + 18

Combine like terms: 171 + 18 = 189
-21x = 189

Divide each side by '-21'.
x = -9

Simplifying
x = -9

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