2x+36=x+21

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Solution for 2x+36=x+21 equation:


Simplifying
2x + 36 = x + 21

Reorder the terms:
36 + 2x = x + 21

Reorder the terms:
36 + 2x = 21 + x

Solving
36 + 2x = 21 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
36 + 2x + -1x = 21 + x + -1x

Combine like terms: 2x + -1x = 1x
36 + 1x = 21 + x + -1x

Combine like terms: x + -1x = 0
36 + 1x = 21 + 0
36 + 1x = 21

Add '-36' to each side of the equation.
36 + -36 + 1x = 21 + -36

Combine like terms: 36 + -36 = 0
0 + 1x = 21 + -36
1x = 21 + -36

Combine like terms: 21 + -36 = -15
1x = -15

Divide each side by '1'.
x = -15

Simplifying
x = -15

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