3x-(7x+7)=9

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Solution for 3x-(7x+7)=9 equation:


Simplifying
3x + -1(7x + 7) = 9

Reorder the terms:
3x + -1(7 + 7x) = 9
3x + (7 * -1 + 7x * -1) = 9
3x + (-7 + -7x) = 9

Reorder the terms:
-7 + 3x + -7x = 9

Combine like terms: 3x + -7x = -4x
-7 + -4x = 9

Solving
-7 + -4x = 9

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 + -4x = 9 + 7

Combine like terms: -7 + 7 = 0
0 + -4x = 9 + 7
-4x = 9 + 7

Combine like terms: 9 + 7 = 16
-4x = 16

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

Simplifying
x = -4

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