4x+3(40-x)=125

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Solution for 4x+3(40-x)=125 equation:


Simplifying
4x + 3(40 + -1x) = 125
4x + (40 * 3 + -1x * 3) = 125
4x + (120 + -3x) = 125

Reorder the terms:
120 + 4x + -3x = 125

Combine like terms: 4x + -3x = 1x
120 + 1x = 125

Solving
120 + 1x = 125

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 + 1x = 125 + -120

Combine like terms: 120 + -120 = 0
0 + 1x = 125 + -120
1x = 125 + -120

Combine like terms: 125 + -120 = 5
1x = 5

Divide each side by '1'.
x = 5

Simplifying
x = 5

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