x+(x-3)=40

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


Simplifying
x + (x + -3) = 40

Reorder the terms:
x + (-3 + x) = 40

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

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

Combine like terms: x + x = 2x
-3 + 2x = 40

Solving
-3 + 2x = 40

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 2x = 40 + 3

Combine like terms: -3 + 3 = 0
0 + 2x = 40 + 3
2x = 40 + 3

Combine like terms: 40 + 3 = 43
2x = 43

Divide each side by '2'.
x = 21.5

Simplifying
x = 21.5

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