8x-21=2x+7

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Solution for 8x-21=2x+7 equation:


Simplifying
8x + -21 = 2x + 7

Reorder the terms:
-21 + 8x = 2x + 7

Reorder the terms:
-21 + 8x = 7 + 2x

Solving
-21 + 8x = 7 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
-21 + 8x + -2x = 7 + 2x + -2x

Combine like terms: 8x + -2x = 6x
-21 + 6x = 7 + 2x + -2x

Combine like terms: 2x + -2x = 0
-21 + 6x = 7 + 0
-21 + 6x = 7

Add '21' to each side of the equation.
-21 + 21 + 6x = 7 + 21

Combine like terms: -21 + 21 = 0
0 + 6x = 7 + 21
6x = 7 + 21

Combine like terms: 7 + 21 = 28
6x = 28

Divide each side by '6'.
x = 4.666666667

Simplifying
x = 4.666666667

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