(x+5)+(2x-20)=90

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Solution for (x+5)+(2x-20)=90 equation:


Simplifying
(x + 5) + (2x + -20) = 90

Reorder the terms:
(5 + x) + (2x + -20) = 90

Remove parenthesis around (5 + x)
5 + x + (2x + -20) = 90

Reorder the terms:
5 + x + (-20 + 2x) = 90

Remove parenthesis around (-20 + 2x)
5 + x + -20 + 2x = 90

Reorder the terms:
5 + -20 + x + 2x = 90

Combine like terms: 5 + -20 = -15
-15 + x + 2x = 90

Combine like terms: x + 2x = 3x
-15 + 3x = 90

Solving
-15 + 3x = 90

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 = 90 + 15

Combine like terms: -15 + 15 = 0
0 + 3x = 90 + 15
3x = 90 + 15

Combine like terms: 90 + 15 = 105
3x = 105

Divide each side by '3'.
x = 35

Simplifying
x = 35

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