5x+21=2x+72

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Solution for 5x+21=2x+72 equation:


Simplifying
5x + 21 = 2x + 72

Reorder the terms:
21 + 5x = 2x + 72

Reorder the terms:
21 + 5x = 72 + 2x

Solving
21 + 5x = 72 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
21 + 5x + -2x = 72 + 2x + -2x

Combine like terms: 5x + -2x = 3x
21 + 3x = 72 + 2x + -2x

Combine like terms: 2x + -2x = 0
21 + 3x = 72 + 0
21 + 3x = 72

Add '-21' to each side of the equation.
21 + -21 + 3x = 72 + -21

Combine like terms: 21 + -21 = 0
0 + 3x = 72 + -21
3x = 72 + -21

Combine like terms: 72 + -21 = 51
3x = 51

Divide each side by '3'.
x = 17

Simplifying
x = 17

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