21x-6=15x+54

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Solution for 21x-6=15x+54 equation:


Simplifying
21x + -6 = 15x + 54

Reorder the terms:
-6 + 21x = 15x + 54

Reorder the terms:
-6 + 21x = 54 + 15x

Solving
-6 + 21x = 54 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
-6 + 21x + -15x = 54 + 15x + -15x

Combine like terms: 21x + -15x = 6x
-6 + 6x = 54 + 15x + -15x

Combine like terms: 15x + -15x = 0
-6 + 6x = 54 + 0
-6 + 6x = 54

Add '6' to each side of the equation.
-6 + 6 + 6x = 54 + 6

Combine like terms: -6 + 6 = 0
0 + 6x = 54 + 6
6x = 54 + 6

Combine like terms: 54 + 6 = 60
6x = 60

Divide each side by '6'.
x = 10

Simplifying
x = 10

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