4x+21=-9+2x

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Solution for 4x+21=-9+2x equation:


Simplifying
4x + 21 = -9 + 2x

Reorder the terms:
21 + 4x = -9 + 2x

Solving
21 + 4x = -9 + 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.
21 + 4x + -2x = -9 + 2x + -2x

Combine like terms: 4x + -2x = 2x
21 + 2x = -9 + 2x + -2x

Combine like terms: 2x + -2x = 0
21 + 2x = -9 + 0
21 + 2x = -9

Add '-21' to each side of the equation.
21 + -21 + 2x = -9 + -21

Combine like terms: 21 + -21 = 0
0 + 2x = -9 + -21
2x = -9 + -21

Combine like terms: -9 + -21 = -30
2x = -30

Divide each side by '2'.
x = -15

Simplifying
x = -15

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