x^2+9x+8=x^2+7x+12

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Solution for x^2+9x+8=x^2+7x+12 equation:


Simplifying
x2 + 9x + 8 = x2 + 7x + 12

Reorder the terms:
8 + 9x + x2 = x2 + 7x + 12

Reorder the terms:
8 + 9x + x2 = 12 + 7x + x2

Add '-1x2' to each side of the equation.
8 + 9x + x2 + -1x2 = 12 + 7x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
8 + 9x + 0 = 12 + 7x + x2 + -1x2
8 + 9x = 12 + 7x + x2 + -1x2

Combine like terms: x2 + -1x2 = 0
8 + 9x = 12 + 7x + 0
8 + 9x = 12 + 7x

Solving
8 + 9x = 12 + 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.
8 + 9x + -7x = 12 + 7x + -7x

Combine like terms: 9x + -7x = 2x
8 + 2x = 12 + 7x + -7x

Combine like terms: 7x + -7x = 0
8 + 2x = 12 + 0
8 + 2x = 12

Add '-8' to each side of the equation.
8 + -8 + 2x = 12 + -8

Combine like terms: 8 + -8 = 0
0 + 2x = 12 + -8
2x = 12 + -8

Combine like terms: 12 + -8 = 4
2x = 4

Divide each side by '2'.
x = 2

Simplifying
x = 2

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