21-7x=27+x

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Solution for 21-7x=27+x equation: 


Simplifying
21 + -7x = 27 + x

Solving
21 + -7x = 27 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
21 + -7x + -1x = 27 + x + -1x

Combine like terms: -7x + -1x = -8x
21 + -8x = 27 + x + -1x

Combine like terms: x + -1x = 0
21 + -8x = 27 + 0
21 + -8x = 27

Add '-21' to each side of the equation.
21 + -21 + -8x = 27 + -21

Combine like terms: 21 + -21 = 0
0 + -8x = 27 + -21
-8x = 27 + -21

Combine like terms: 27 + -21 = 6
-8x = 6

Divide each side by '-8'.
x = -0.75

Simplifying
x = -0.75

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