18x-21=7x+45+8x

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Solution for 18x-21=7x+45+8x equation:


Simplifying
18x + -21 = 7x + 45 + 8x

Reorder the terms:
-21 + 18x = 7x + 45 + 8x

Reorder the terms:
-21 + 18x = 45 + 7x + 8x

Combine like terms: 7x + 8x = 15x
-21 + 18x = 45 + 15x

Solving
-21 + 18x = 45 + 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.
-21 + 18x + -15x = 45 + 15x + -15x

Combine like terms: 18x + -15x = 3x
-21 + 3x = 45 + 15x + -15x

Combine like terms: 15x + -15x = 0
-21 + 3x = 45 + 0
-21 + 3x = 45

Add '21' to each side of the equation.
-21 + 21 + 3x = 45 + 21

Combine like terms: -21 + 21 = 0
0 + 3x = 45 + 21
3x = 45 + 21

Combine like terms: 45 + 21 = 66
3x = 66

Divide each side by '3'.
x = 22

Simplifying
x = 22

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