1+2+1+2+(9-x)+x+(12-x)=24

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Solution for 1+2+1+2+(9-x)+x+(12-x)=24 equation:


Simplifying
1 + 2 + 1 + 2 + (9 + -1x) + x + (12 + -1x) = 24

Remove parenthesis around (9 + -1x)
1 + 2 + 1 + 2 + 9 + -1x + x + (12 + -1x) = 24

Remove parenthesis around (12 + -1x)
1 + 2 + 1 + 2 + 9 + -1x + x + 12 + -1x = 24

Reorder the terms:
1 + 2 + 1 + 2 + 9 + 12 + -1x + x + -1x = 24

Combine like terms: 1 + 2 = 3
3 + 1 + 2 + 9 + 12 + -1x + x + -1x = 24

Combine like terms: 3 + 1 = 4
4 + 2 + 9 + 12 + -1x + x + -1x = 24

Combine like terms: 4 + 2 = 6
6 + 9 + 12 + -1x + x + -1x = 24

Combine like terms: 6 + 9 = 15
15 + 12 + -1x + x + -1x = 24

Combine like terms: 15 + 12 = 27
27 + -1x + x + -1x = 24

Combine like terms: -1x + x = 0
27 + 0 + -1x = 24
27 + -1x = 24

Solving
27 + -1x = 24

Solving for variable 'x'.

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

Add '-27' to each side of the equation.
27 + -27 + -1x = 24 + -27

Combine like terms: 27 + -27 = 0
0 + -1x = 24 + -27
-1x = 24 + -27

Combine like terms: 24 + -27 = -3
-1x = -3

Divide each side by '-1'.
x = 3

Simplifying
x = 3

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