[r+3]=3

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Solution for [r+3]=3 equation: 


Simplifying
[r + 3] = 3

Reorder the terms:
[3 + r] = 3

Remove brackets around [3 + r]
3 + r = 3

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

Combine like terms: 3 + -3 = 0
0 + r = 3 + -3
r = 3 + -3

Combine like terms: 3 + -3 = 0
r = 0

Solving
r = 0

Solving for variable 'r'.

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

Simplifying
r = 0

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