1+[2+x]=9

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Solution for 1+[2+x]=9 equation: 


Simplifying
1 + [2 + x] = 9

Remove brackets around [2 + x]
1 + 2 + x = 9

Combine like terms: 1 + 2 = 3
3 + x = 9

Solving
3 + x = 9

Solving for variable 'x'.

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

Add '-3' to each side of the equation.
3 + -3 + x = 9 + -3

Combine like terms: 3 + -3 = 0
0 + x = 9 + -3
x = 9 + -3

Combine like terms: 9 + -3 = 6
x = 6

Simplifying
x = 6

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