[r+1]=2

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Solution for [r+1]=2 equation: 


Simplifying
[r + 1] = 2

Reorder the terms:
[1 + r] = 2

Remove brackets around [1 + r]
1 + r = 2

Solving
1 + r = 2

Solving for variable 'r'.

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

Add '-1' to each side of the equation.
1 + -1 + r = 2 + -1

Combine like terms: 1 + -1 = 0
0 + r = 2 + -1
r = 2 + -1

Combine like terms: 2 + -1 = 1
r = 1

Simplifying
r = 1

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