12x+9=16x-7

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Solution for 12x+9=16x-7 equation:


Simplifying
12x + 9 = 16x + -7

Reorder the terms:
9 + 12x = 16x + -7

Reorder the terms:
9 + 12x = -7 + 16x

Solving
9 + 12x = -7 + 16x

Solving for variable 'x'.

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

Add '-16x' to each side of the equation.
9 + 12x + -16x = -7 + 16x + -16x

Combine like terms: 12x + -16x = -4x
9 + -4x = -7 + 16x + -16x

Combine like terms: 16x + -16x = 0
9 + -4x = -7 + 0
9 + -4x = -7

Add '-9' to each side of the equation.
9 + -9 + -4x = -7 + -9

Combine like terms: 9 + -9 = 0
0 + -4x = -7 + -9
-4x = -7 + -9

Combine like terms: -7 + -9 = -16
-4x = -16

Divide each side by '-4'.
x = 4

Simplifying
x = 4

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