78-6x=21x+21

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Solution for 78-6x=21x+21 equation:


Simplifying
78 + -6x = 21x + 21

Reorder the terms:
78 + -6x = 21 + 21x

Solving
78 + -6x = 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.
78 + -6x + -21x = 21 + 21x + -21x

Combine like terms: -6x + -21x = -27x
78 + -27x = 21 + 21x + -21x

Combine like terms: 21x + -21x = 0
78 + -27x = 21 + 0
78 + -27x = 21

Add '-78' to each side of the equation.
78 + -78 + -27x = 21 + -78

Combine like terms: 78 + -78 = 0
0 + -27x = 21 + -78
-27x = 21 + -78

Combine like terms: 21 + -78 = -57
-27x = -57

Divide each side by '-27'.
x = 2.111111111

Simplifying
x = 2.111111111

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