21-8x=39

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Solution for 21-8x=39 equation:


Simplifying
21 + -8x = 39

Solving
21 + -8x = 39

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 + -8x = 39 + -21

Combine like terms: 21 + -21 = 0
0 + -8x = 39 + -21
-8x = 39 + -21

Combine like terms: 39 + -21 = 18
-8x = 18

Divide each side by '-8'.
x = -2.25

Simplifying
x = -2.25

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