405+3x=720

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Solution for 405+3x=720 equation: 


Simplifying
405 + 3x = 720

Solving
405 + 3x = 720

Solving for variable 'x'.

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

Add '-405' to each side of the equation.
405 + -405 + 3x = 720 + -405

Combine like terms: 405 + -405 = 0
0 + 3x = 720 + -405
3x = 720 + -405

Combine like terms: 720 + -405 = 315
3x = 315

Divide each side by '3'.
x = 105

Simplifying
x = 105

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