2x-4+4=21

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Solution for 2x-4+4=21 equation: 


Simplifying
2x + -4 + 4 = 21

Reorder the terms:
-4 + 4 + 2x = 21

Combine like terms: -4 + 4 = 0
0 + 2x = 21
2x = 21

Solving
2x = 21

Solving for variable 'x'.

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

Divide each side by '2'.
x = 10.5

Simplifying
x = 10.5

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