121=7x-5+2x+9

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Solution for 121=7x-5+2x+9 equation:


Simplifying
121 = 7x + -5 + 2x + 9

Reorder the terms:
121 = -5 + 9 + 7x + 2x

Combine like terms: -5 + 9 = 4
121 = 4 + 7x + 2x

Combine like terms: 7x + 2x = 9x
121 = 4 + 9x

Solving
121 = 4 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
121 + -9x = 4 + 9x + -9x

Combine like terms: 9x + -9x = 0
121 + -9x = 4 + 0
121 + -9x = 4

Add '-121' to each side of the equation.
121 + -121 + -9x = 4 + -121

Combine like terms: 121 + -121 = 0
0 + -9x = 4 + -121
-9x = 4 + -121

Combine like terms: 4 + -121 = -117
-9x = -117

Divide each side by '-9'.
x = 13

Simplifying
x = 13

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