2x-13=21-2x

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Solution for 2x-13=21-2x equation:


Simplifying
2x + -13 = 21 + -2x

Reorder the terms:
-13 + 2x = 21 + -2x

Solving
-13 + 2x = 21 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-13 + 2x + 2x = 21 + -2x + 2x

Combine like terms: 2x + 2x = 4x
-13 + 4x = 21 + -2x + 2x

Combine like terms: -2x + 2x = 0
-13 + 4x = 21 + 0
-13 + 4x = 21

Add '13' to each side of the equation.
-13 + 13 + 4x = 21 + 13

Combine like terms: -13 + 13 = 0
0 + 4x = 21 + 13
4x = 21 + 13

Combine like terms: 21 + 13 = 34
4x = 34

Divide each side by '4'.
x = 8.5

Simplifying
x = 8.5

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