7x-21=x+27

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


Simplifying
7x + -21 = x + 27

Reorder the terms:
-21 + 7x = x + 27

Reorder the terms:
-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 = 6x
-21 + 6x = 27 + x + -1x

Combine like terms: x + -1x = 0
-21 + 6x = 27 + 0
-21 + 6x = 27

Add '21' to each side of the equation.
-21 + 21 + 6x = 27 + 21

Combine like terms: -21 + 21 = 0
0 + 6x = 27 + 21
6x = 27 + 21

Combine like terms: 27 + 21 = 48
6x = 48

Divide each side by '6'.
x = 8

Simplifying
x = 8

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