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

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


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

Reorder the terms:
x + (-3 + x) + (x + 4) = 40

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

Reorder the terms:
x + -3 + x + (4 + x) = 40

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

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

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

Combine like terms: x + x = 2x
1 + 2x + x = 40

Combine like terms: 2x + x = 3x
1 + 3x = 40

Solving
1 + 3x = 40

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + 3x = 40 + -1

Combine like terms: 1 + -1 = 0
0 + 3x = 40 + -1
3x = 40 + -1

Combine like terms: 40 + -1 = 39
3x = 39

Divide each side by '3'.
x = 13

Simplifying
x = 13

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