51=12x-1+3x+7

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Solution for 51=12x-1+3x+7 equation:


Simplifying
51 = 12x + -1 + 3x + 7

Reorder the terms:
51 = -1 + 7 + 12x + 3x

Combine like terms: -1 + 7 = 6
51 = 6 + 12x + 3x

Combine like terms: 12x + 3x = 15x
51 = 6 + 15x

Solving
51 = 6 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
51 + -15x = 6 + 15x + -15x

Combine like terms: 15x + -15x = 0
51 + -15x = 6 + 0
51 + -15x = 6

Add '-51' to each side of the equation.
51 + -51 + -15x = 6 + -51

Combine like terms: 51 + -51 = 0
0 + -15x = 6 + -51
-15x = 6 + -51

Combine like terms: 6 + -51 = -45
-15x = -45

Divide each side by '-15'.
x = 3

Simplifying
x = 3

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