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

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


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

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

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

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

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

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

Combine like terms: 10 + 10 = 20
20 + X + x = 90

Solving
20 + X + x = 90

Solving for variable 'X'.

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

Add '-20' to each side of the equation.
20 + X + -20 + x = 90 + -20

Reorder the terms:
20 + -20 + X + x = 90 + -20

Combine like terms: 20 + -20 = 0
0 + X + x = 90 + -20
X + x = 90 + -20

Combine like terms: 90 + -20 = 70
X + x = 70

Add '-1x' to each side of the equation.
X + x + -1x = 70 + -1x

Combine like terms: x + -1x = 0
X + 0 = 70 + -1x
X = 70 + -1x

Simplifying
X = 70 + -1x

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