[x+3]=7

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Solution for [x+3]=7 equation: 


Simplifying
[x + 3] = 7

Reorder the terms:
[3 + x] = 7

Remove brackets around [3 + x]
3 + x = 7

Solving
3 + x = 7

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 = 7 + -3

Combine like terms: 3 + -3 = 0
0 + x = 7 + -3
x = 7 + -3

Combine like terms: 7 + -3 = 4
x = 4

Simplifying
x = 4

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