-x+6+4x=-21

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Solution for -x+6+4x=-21 equation: 


Simplifying
-1x + 6 + 4x = -21

Reorder the terms:
6 + -1x + 4x = -21

Combine like terms: -1x + 4x = 3x
6 + 3x = -21

Solving
6 + 3x = -21

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 3x = -21 + -6

Combine like terms: 6 + -6 = 0
0 + 3x = -21 + -6
3x = -21 + -6

Combine like terms: -21 + -6 = -27
3x = -27

Divide each side by '3'.
x = -9

Simplifying
x = -9

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