-4x+9=-21-x

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


Simplifying
-4x + 9 = -21 + -1x

Reorder the terms:
9 + -4x = -21 + -1x

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

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
9 + -4x + x = -21 + -1x + x

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

Combine like terms: -1x + x = 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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