x+121=8(x+9)

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Solution for x+121=8(x+9) equation:


Simplifying
x + 121 = 8(x + 9)

Reorder the terms:
121 + x = 8(x + 9)

Reorder the terms:
121 + x = 8(9 + x)
121 + x = (9 * 8 + x * 8)
121 + x = (72 + 8x)

Solving
121 + x = 72 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
121 + x + -8x = 72 + 8x + -8x

Combine like terms: x + -8x = -7x
121 + -7x = 72 + 8x + -8x

Combine like terms: 8x + -8x = 0
121 + -7x = 72 + 0
121 + -7x = 72

Add '-121' to each side of the equation.
121 + -121 + -7x = 72 + -121

Combine like terms: 121 + -121 = 0
0 + -7x = 72 + -121
-7x = 72 + -121

Combine like terms: 72 + -121 = -49
-7x = -49

Divide each side by '-7'.
x = 7

Simplifying
x = 7

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