5x-7(x+1)=9

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Solution for 5x-7(x+1)=9 equation:


Simplifying
5x + -7(x + 1) = 9

Reorder the terms:
5x + -7(1 + x) = 9
5x + (1 * -7 + x * -7) = 9
5x + (-7 + -7x) = 9

Reorder the terms:
-7 + 5x + -7x = 9

Combine like terms: 5x + -7x = -2x
-7 + -2x = 9

Solving
-7 + -2x = 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 + -2x = 9 + 7

Combine like terms: -7 + 7 = 0
0 + -2x = 9 + 7
-2x = 9 + 7

Combine like terms: 9 + 7 = 16
-2x = 16

Divide each side by '-2'.
x = -8

Simplifying
x = -8

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