8-21=28x+7

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Solution for 8-21=28x+7 equation:


Simplifying
8 + -21 = 28x + 7

Combine like terms: 8 + -21 = -13
-13 = 28x + 7

Reorder the terms:
-13 = 7 + 28x

Solving
-13 = 7 + 28x

Solving for variable 'x'.

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

Add '-28x' to each side of the equation.
-13 + -28x = 7 + 28x + -28x

Combine like terms: 28x + -28x = 0
-13 + -28x = 7 + 0
-13 + -28x = 7

Add '13' to each side of the equation.
-13 + 13 + -28x = 7 + 13

Combine like terms: -13 + 13 = 0
0 + -28x = 7 + 13
-28x = 7 + 13

Combine like terms: 7 + 13 = 20
-28x = 20

Divide each side by '-28'.
x = -0.7142857143

Simplifying
x = -0.7142857143

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