(10-x)+x+(21-x)=24

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Solution for (10-x)+x+(21-x)=24 equation:


Simplifying
(10 + -1x) + x + (21 + -1x) = 24

Remove parenthesis around (10 + -1x)
10 + -1x + x + (21 + -1x) = 24

Remove parenthesis around (21 + -1x)
10 + -1x + x + 21 + -1x = 24

Reorder the terms:
10 + 21 + -1x + x + -1x = 24

Combine like terms: 10 + 21 = 31
31 + -1x + x + -1x = 24

Combine like terms: -1x + x = 0
31 + 0 + -1x = 24
31 + -1x = 24

Solving
31 + -1x = 24

Solving for variable 'x'.

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

Add '-31' to each side of the equation.
31 + -31 + -1x = 24 + -31

Combine like terms: 31 + -31 = 0
0 + -1x = 24 + -31
-1x = 24 + -31

Combine like terms: 24 + -31 = -7
-1x = -7

Divide each side by '-1'.
x = 7

Simplifying
x = 7

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