x+7+[4+(5+x)]=9

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Solution for x+7+[4+(5+x)]=9 equation:


Simplifying
x + 7 + [4 + (5 + x)] = 9

Remove parenthesis around (5 + x)
x + 7 + [4 + 5 + x] = 9

Combine like terms: 4 + 5 = 9
x + 7 + [9 + x] = 9

Remove brackets around [9 + x]
x + 7 + 9 + x = 9

Reorder the terms:
7 + 9 + x + x = 9

Combine like terms: 7 + 9 = 16
16 + x + x = 9

Combine like terms: x + x = 2x
16 + 2x = 9

Solving
16 + 2x = 9

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + 2x = 9 + -16

Combine like terms: 16 + -16 = 0
0 + 2x = 9 + -16
2x = 9 + -16

Combine like terms: 9 + -16 = -7
2x = -7

Divide each side by '2'.
x = -3.5

Simplifying
x = -3.5

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