x+(x+7)+(x+8)=30

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Solution for x+(x+7)+(x+8)=30 equation:


Simplifying
x + (x + 7) + (x + 8) = 30

Reorder the terms:
x + (7 + x) + (x + 8) = 30

Remove parenthesis around (7 + x)
x + 7 + x + (x + 8) = 30

Reorder the terms:
x + 7 + x + (8 + x) = 30

Remove parenthesis around (8 + x)
x + 7 + x + 8 + x = 30

Reorder the terms:
7 + 8 + x + x + x = 30

Combine like terms: 7 + 8 = 15
15 + x + x + x = 30

Combine like terms: x + x = 2x
15 + 2x + x = 30

Combine like terms: 2x + x = 3x
15 + 3x = 30

Solving
15 + 3x = 30

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + 3x = 30 + -15

Combine like terms: 15 + -15 = 0
0 + 3x = 30 + -15
3x = 30 + -15

Combine like terms: 30 + -15 = 15
3x = 15

Divide each side by '3'.
x = 5

Simplifying
x = 5

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