71+9x=91+7x

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Solution for 71+9x=91+7x equation:


Simplifying
71 + 9x = 91 + 7x

Solving
71 + 9x = 91 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
71 + 9x + -7x = 91 + 7x + -7x

Combine like terms: 9x + -7x = 2x
71 + 2x = 91 + 7x + -7x

Combine like terms: 7x + -7x = 0
71 + 2x = 91 + 0
71 + 2x = 91

Add '-71' to each side of the equation.
71 + -71 + 2x = 91 + -71

Combine like terms: 71 + -71 = 0
0 + 2x = 91 + -71
2x = 91 + -71

Combine like terms: 91 + -71 = 20
2x = 20

Divide each side by '2'.
x = 10

Simplifying
x = 10

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