(X-1)+(x+8)=10

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Solution for (X-1)+(x+8)=10 equation: 


Simplifying
(X + -1) + (x + 8) = 10

Reorder the terms:
(-1 + X) + (x + 8) = 10

Remove parenthesis around (-1 + X)
-1 + X + (x + 8) = 10

Reorder the terms:
-1 + X + (8 + x) = 10

Remove parenthesis around (8 + x)
-1 + X + 8 + x = 10

Reorder the terms:
-1 + 8 + X + x = 10

Combine like terms: -1 + 8 = 7
7 + X + x = 10

Solving
7 + X + x = 10

Solving for variable 'X'.

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

Add '-7' to each side of the equation.
7 + X + -7 + x = 10 + -7

Reorder the terms:
7 + -7 + X + x = 10 + -7

Combine like terms: 7 + -7 = 0
0 + X + x = 10 + -7
X + x = 10 + -7

Combine like terms: 10 + -7 = 3
X + x = 3

Add '-1x' to each side of the equation.
X + x + -1x = 3 + -1x

Combine like terms: x + -1x = 0
X + 0 = 3 + -1x
X = 3 + -1x

Simplifying
X = 3 + -1x

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