5x+3*[40-x]=180

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Solution for 5x+3*[40-x]=180 equation:


Simplifying
5x + 3[40 + -1x] = 180
5x + [40 * 3 + -1x * 3] = 180
5x + [120 + -3x] = 180

Reorder the terms:
120 + 5x + -3x = 180

Combine like terms: 5x + -3x = 2x
120 + 2x = 180

Solving
120 + 2x = 180

Solving for variable 'x'.

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

Add '-120' to each side of the equation.
120 + -120 + 2x = 180 + -120

Combine like terms: 120 + -120 = 0
0 + 2x = 180 + -120
2x = 180 + -120

Combine like terms: 180 + -120 = 60
2x = 60

Divide each side by '2'.
x = 30

Simplifying
x = 30

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