-6x+21=-75

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Solution for -6x+21=-75 equation: 


Simplifying
-6x + 21 = -75

Reorder the terms:
21 + -6x = -75

Solving
21 + -6x = -75

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + -6x = -75 + -21

Combine like terms: 21 + -21 = 0
0 + -6x = -75 + -21
-6x = -75 + -21

Combine like terms: -75 + -21 = -96
-6x = -96

Divide each side by '-6'.
x = 16

Simplifying
x = 16

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