4x+(20-3x)=40

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Solution for 4x+(20-3x)=40 equation:


Simplifying
4x + (20 + -3x) = 40

Remove parenthesis around (20 + -3x)
4x + 20 + -3x = 40

Reorder the terms:
20 + 4x + -3x = 40

Combine like terms: 4x + -3x = 1x
20 + 1x = 40

Solving
20 + 1x = 40

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + 1x = 40 + -20

Combine like terms: 20 + -20 = 0
0 + 1x = 40 + -20
1x = 40 + -20

Combine like terms: 40 + -20 = 20
1x = 20

Divide each side by '1'.
x = 20

Simplifying
x = 20

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