9-6x=-7x+21

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Solution for 9-6x=-7x+21 equation:


Simplifying
9 + -6x = -7x + 21

Reorder the terms:
9 + -6x = 21 + -7x

Solving
9 + -6x = 21 + -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 + -6x + 7x = 21 + -7x + 7x

Combine like terms: -6x + 7x = 1x
9 + 1x = 21 + -7x + 7x

Combine like terms: -7x + 7x = 0
9 + 1x = 21 + 0
9 + 1x = 21

Add '-9' to each side of the equation.
9 + -9 + 1x = 21 + -9

Combine like terms: 9 + -9 = 0
0 + 1x = 21 + -9
1x = 21 + -9

Combine like terms: 21 + -9 = 12
1x = 12

Divide each side by '1'.
x = 12

Simplifying
x = 12

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