27x-81=21x-21

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Solution for 27x-81=21x-21 equation:


Simplifying
27x + -81 = 21x + -21

Reorder the terms:
-81 + 27x = 21x + -21

Reorder the terms:
-81 + 27x = -21 + 21x

Solving
-81 + 27x = -21 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
-81 + 27x + -21x = -21 + 21x + -21x

Combine like terms: 27x + -21x = 6x
-81 + 6x = -21 + 21x + -21x

Combine like terms: 21x + -21x = 0
-81 + 6x = -21 + 0
-81 + 6x = -21

Add '81' to each side of the equation.
-81 + 81 + 6x = -21 + 81

Combine like terms: -81 + 81 = 0
0 + 6x = -21 + 81
6x = -21 + 81

Combine like terms: -21 + 81 = 60
6x = 60

Divide each side by '6'.
x = 10

Simplifying
x = 10

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