21+3x=x+29

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Solution for 21+3x=x+29 equation:


Simplifying
21 + 3x = x + 29

Reorder the terms:
21 + 3x = 29 + x

Solving
21 + 3x = 29 + 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.
21 + 3x + -1x = 29 + x + -1x

Combine like terms: 3x + -1x = 2x
21 + 2x = 29 + x + -1x

Combine like terms: x + -1x = 0
21 + 2x = 29 + 0
21 + 2x = 29

Add '-21' to each side of the equation.
21 + -21 + 2x = 29 + -21

Combine like terms: 21 + -21 = 0
0 + 2x = 29 + -21
2x = 29 + -21

Combine like terms: 29 + -21 = 8
2x = 8

Divide each side by '2'.
x = 4

Simplifying
x = 4

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