4x-8=-21

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Solution for 4x-8=-21 equation: 


Simplifying
4x + -8 = -21

Reorder the terms:
-8 + 4x = -21

Solving
-8 + 4x = -21

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + 4x = -21 + 8

Combine like terms: -8 + 8 = 0
0 + 4x = -21 + 8
4x = -21 + 8

Combine like terms: -21 + 8 = -13
4x = -13

Divide each side by '4'.
x = -3.25

Simplifying
x = -3.25

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