720=45+135+x+135+45+3x

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Solution for 720=45+135+x+135+45+3x equation: 


Simplifying
720 = 45 + 135 + x + 135 + 45 + 3x

Reorder the terms:
720 = 45 + 135 + 135 + 45 + x + 3x

Combine like terms: 45 + 135 = 180
720 = 180 + 135 + 45 + x + 3x

Combine like terms: 180 + 135 = 315
720 = 315 + 45 + x + 3x

Combine like terms: 315 + 45 = 360
720 = 360 + x + 3x

Combine like terms: x + 3x = 4x
720 = 360 + 4x

Solving
720 = 360 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
720 + -4x = 360 + 4x + -4x

Combine like terms: 4x + -4x = 0
720 + -4x = 360 + 0
720 + -4x = 360

Add '-720' to each side of the equation.
720 + -720 + -4x = 360 + -720

Combine like terms: 720 + -720 = 0
0 + -4x = 360 + -720
-4x = 360 + -720

Combine like terms: 360 + -720 = -360
-4x = -360

Divide each side by '-4'.
x = 90

Simplifying
x = 90

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