51=5x+7x-9

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Solution for 51=5x+7x-9 equation:


Simplifying
51 = 5x + 7x + -9

Reorder the terms:
51 = -9 + 5x + 7x

Combine like terms: 5x + 7x = 12x
51 = -9 + 12x

Solving
51 = -9 + 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
51 + -12x = -9 + 12x + -12x

Combine like terms: 12x + -12x = 0
51 + -12x = -9 + 0
51 + -12x = -9

Add '-51' to each side of the equation.
51 + -51 + -12x = -9 + -51

Combine like terms: 51 + -51 = 0
0 + -12x = -9 + -51
-12x = -9 + -51

Combine like terms: -9 + -51 = -60
-12x = -60

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

Simplifying
x = 5

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