8x+21=5x+66

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Solution for 8x+21=5x+66 equation:


Simplifying
8x + 21 = 5x + 66

Reorder the terms:
21 + 8x = 5x + 66

Reorder the terms:
21 + 8x = 66 + 5x

Solving
21 + 8x = 66 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
21 + 8x + -5x = 66 + 5x + -5x

Combine like terms: 8x + -5x = 3x
21 + 3x = 66 + 5x + -5x

Combine like terms: 5x + -5x = 0
21 + 3x = 66 + 0
21 + 3x = 66

Add '-21' to each side of the equation.
21 + -21 + 3x = 66 + -21

Combine like terms: 21 + -21 = 0
0 + 3x = 66 + -21
3x = 66 + -21

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

Divide each side by '3'.
x = 15

Simplifying
x = 15

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