8x+21=5x+57

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Solution for 8x+21=5x+57 equation:


Simplifying
8x + 21 = 5x + 57

Reorder the terms:
21 + 8x = 5x + 57

Reorder the terms:
21 + 8x = 57 + 5x

Solving
21 + 8x = 57 + 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 = 57 + 5x + -5x

Combine like terms: 8x + -5x = 3x
21 + 3x = 57 + 5x + -5x

Combine like terms: 5x + -5x = 0
21 + 3x = 57 + 0
21 + 3x = 57

Add '-21' to each side of the equation.
21 + -21 + 3x = 57 + -21

Combine like terms: 21 + -21 = 0
0 + 3x = 57 + -21
3x = 57 + -21

Combine like terms: 57 + -21 = 36
3x = 36

Divide each side by '3'.
x = 12

Simplifying
x = 12

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