9x-7(3x-13)=31

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Solution for 9x-7(3x-13)=31 equation:


Simplifying
9x + -7(3x + -13) = 31

Reorder the terms:
9x + -7(-13 + 3x) = 31
9x + (-13 * -7 + 3x * -7) = 31
9x + (91 + -21x) = 31

Reorder the terms:
91 + 9x + -21x = 31

Combine like terms: 9x + -21x = -12x
91 + -12x = 31

Solving
91 + -12x = 31

Solving for variable 'x'.

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

Add '-91' to each side of the equation.
91 + -91 + -12x = 31 + -91

Combine like terms: 91 + -91 = 0
0 + -12x = 31 + -91
-12x = 31 + -91

Combine like terms: 31 + -91 = -60
-12x = -60

Divide each side by '-12'.
x = 5

Simplifying
x = 5

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