-21=8x+13

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Solution for -21=8x+13 equation:


Simplifying
-21 = 8x + 13

Reorder the terms:
-21 = 13 + 8x

Solving
-21 = 13 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-21 + -8x = 13 + 8x + -8x

Combine like terms: 8x + -8x = 0
-21 + -8x = 13 + 0
-21 + -8x = 13

Add '21' to each side of the equation.
-21 + 21 + -8x = 13 + 21

Combine like terms: -21 + 21 = 0
0 + -8x = 13 + 21
-8x = 13 + 21

Combine like terms: 13 + 21 = 34
-8x = 34

Divide each side by '-8'.
x = -4.25

Simplifying
x = -4.25

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