4x+9=-21+x

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


Simplifying
4x + 9 = -21 + x

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

Solving
9 + 4x = -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.
9 + 4x + -1x = -21 + x + -1x

Combine like terms: 4x + -1x = 3x
9 + 3x = -21 + x + -1x

Combine like terms: x + -1x = 0
9 + 3x = -21 + 0
9 + 3x = -21

Add '-9' to each side of the equation.
9 + -9 + 3x = -21 + -9

Combine like terms: 9 + -9 = 0
0 + 3x = -21 + -9
3x = -21 + -9

Combine like terms: -21 + -9 = -30
3x = -30

Divide each side by '3'.
x = -10

Simplifying
x = -10

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