3x+9=-7+7x

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Solution for 3x+9=-7+7x equation:


Simplifying
3x + 9 = -7 + 7x

Reorder the terms:
9 + 3x = -7 + 7x

Solving
9 + 3x = -7 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
9 + 3x + -7x = -7 + 7x + -7x

Combine like terms: 3x + -7x = -4x
9 + -4x = -7 + 7x + -7x

Combine like terms: 7x + -7x = 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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