2x+6-6=21-6

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Solution for 2x+6-6=21-6 equation: 


Simplifying
2x + 6 + -6 = 21 + -6

Reorder the terms:
6 + -6 + 2x = 21 + -6

Combine like terms: 6 + -6 = 0
0 + 2x = 21 + -6
2x = 21 + -6

Combine like terms: 21 + -6 = 15
2x = 15

Solving
2x = 15

Solving for variable 'x'.

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

Divide each side by '2'.
x = 7.5

Simplifying
x = 7.5

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