X+(x+10)+(x+15)=90

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Solution for X+(x+10)+(x+15)=90 equation:


Simplifying
X + (x + 10) + (x + 15) = 90

Reorder the terms:
X + (10 + x) + (x + 15) = 90

Remove parenthesis around (10 + x)
X + 10 + x + (x + 15) = 90

Reorder the terms:
X + 10 + x + (15 + x) = 90

Remove parenthesis around (15 + x)
X + 10 + x + 15 + x = 90

Reorder the terms:
10 + 15 + X + x + x = 90

Combine like terms: 10 + 15 = 25
25 + X + x + x = 90

Combine like terms: x + x = 2x
25 + X + 2x = 90

Solving
25 + X + 2x = 90

Solving for variable 'X'.

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

Add '-25' to each side of the equation.
25 + X + -25 + 2x = 90 + -25

Reorder the terms:
25 + -25 + X + 2x = 90 + -25

Combine like terms: 25 + -25 = 0
0 + X + 2x = 90 + -25
X + 2x = 90 + -25

Combine like terms: 90 + -25 = 65
X + 2x = 65

Add '-2x' to each side of the equation.
X + 2x + -2x = 65 + -2x

Combine like terms: 2x + -2x = 0
X + 0 = 65 + -2x
X = 65 + -2x

Simplifying
X = 65 + -2x

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