27x-15=18x+21

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Solution for 27x-15=18x+21 equation:


Simplifying
27x + -15 = 18x + 21

Reorder the terms:
-15 + 27x = 18x + 21

Reorder the terms:
-15 + 27x = 21 + 18x

Solving
-15 + 27x = 21 + 18x

Solving for variable 'x'.

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

Add '-18x' to each side of the equation.
-15 + 27x + -18x = 21 + 18x + -18x

Combine like terms: 27x + -18x = 9x
-15 + 9x = 21 + 18x + -18x

Combine like terms: 18x + -18x = 0
-15 + 9x = 21 + 0
-15 + 9x = 21

Add '15' to each side of the equation.
-15 + 15 + 9x = 21 + 15

Combine like terms: -15 + 15 = 0
0 + 9x = 21 + 15
9x = 21 + 15

Combine like terms: 21 + 15 = 36
9x = 36

Divide each side by '9'.
x = 4

Simplifying
x = 4

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