(x+20)+(2x+10)=90

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Solution for (x+20)+(2x+10)=90 equation: 


Simplifying
(x + 20) + (2x + 10) = 90

Reorder the terms:
(20 + x) + (2x + 10) = 90

Remove parenthesis around (20 + x)
20 + x + (2x + 10) = 90

Reorder the terms:
20 + x + (10 + 2x) = 90

Remove parenthesis around (10 + 2x)
20 + x + 10 + 2x = 90

Reorder the terms:
20 + 10 + x + 2x = 90

Combine like terms: 20 + 10 = 30
30 + x + 2x = 90

Combine like terms: x + 2x = 3x
30 + 3x = 90

Solving
30 + 3x = 90

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + 3x = 90 + -30

Combine like terms: 30 + -30 = 0
0 + 3x = 90 + -30
3x = 90 + -30

Combine like terms: 90 + -30 = 60
3x = 60

Divide each side by '3'.
x = 20

Simplifying
x = 20

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