4x+3(20-x)=80

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Solution for 4x+3(20-x)=80 equation:


Simplifying
4x + 3(20 + -1x) = 80
4x + (20 * 3 + -1x * 3) = 80
4x + (60 + -3x) = 80

Reorder the terms:
60 + 4x + -3x = 80

Combine like terms: 4x + -3x = 1x
60 + 1x = 80

Solving
60 + 1x = 80

Solving for variable 'x'.

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

Add '-60' to each side of the equation.
60 + -60 + 1x = 80 + -60

Combine like terms: 60 + -60 = 0
0 + 1x = 80 + -60
1x = 80 + -60

Combine like terms: 80 + -60 = 20
1x = 20

Divide each side by '1'.
x = 20

Simplifying
x = 20

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