2x+21+4x+15=x

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Solution for 2x+21+4x+15=x equation:


Simplifying
2x + 21 + 4x + 15 = x

Reorder the terms:
21 + 15 + 2x + 4x = x

Combine like terms: 21 + 15 = 36
36 + 2x + 4x = x

Combine like terms: 2x + 4x = 6x
36 + 6x = x

Solving
36 + 6x = 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 + 6x + -1x = x + -1x

Combine like terms: 6x + -1x = 5x
36 + 5x = x + -1x

Combine like terms: x + -1x = 0
36 + 5x = 0

Add '-36' to each side of the equation.
36 + -36 + 5x = 0 + -36

Combine like terms: 36 + -36 = 0
0 + 5x = 0 + -36
5x = 0 + -36

Combine like terms: 0 + -36 = -36
5x = -36

Divide each side by '5'.
x = -7.2

Simplifying
x = -7.2

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