x+(x+7)+(x+9)=40

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Solution for x+(x+7)+(x+9)=40 equation:


Simplifying
x + (x + 7) + (x + 9) = 40

Reorder the terms:
x + (7 + x) + (x + 9) = 40

Remove parenthesis around (7 + x)
x + 7 + x + (x + 9) = 40

Reorder the terms:
x + 7 + x + (9 + x) = 40

Remove parenthesis around (9 + x)
x + 7 + x + 9 + x = 40

Reorder the terms:
7 + 9 + x + x + x = 40

Combine like terms: 7 + 9 = 16
16 + x + x + x = 40

Combine like terms: x + x = 2x
16 + 2x + x = 40

Combine like terms: 2x + x = 3x
16 + 3x = 40

Solving
16 + 3x = 40

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + 3x = 40 + -16

Combine like terms: 16 + -16 = 0
0 + 3x = 40 + -16
3x = 40 + -16

Combine like terms: 40 + -16 = 24
3x = 24

Divide each side by '3'.
x = 8

Simplifying
x = 8

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