(X+1)+(x+5)=21

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Solution for (X+1)+(x+5)=21 equation:


Simplifying
(X + 1) + (x + 5) = 21

Reorder the terms:
(1 + X) + (x + 5) = 21

Remove parenthesis around (1 + X)
1 + X + (x + 5) = 21

Reorder the terms:
1 + X + (5 + x) = 21

Remove parenthesis around (5 + x)
1 + X + 5 + x = 21

Reorder the terms:
1 + 5 + X + x = 21

Combine like terms: 1 + 5 = 6
6 + X + x = 21

Solving
6 + X + x = 21

Solving for variable 'X'.

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

Add '-6' to each side of the equation.
6 + X + -6 + x = 21 + -6

Reorder the terms:
6 + -6 + X + x = 21 + -6

Combine like terms: 6 + -6 = 0
0 + X + x = 21 + -6
X + x = 21 + -6

Combine like terms: 21 + -6 = 15
X + x = 15

Add '-1x' to each side of the equation.
X + x + -1x = 15 + -1x

Combine like terms: x + -1x = 0
X + 0 = 15 + -1x
X = 15 + -1x

Simplifying
X = 15 + -1x

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