r-1+r=3

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Solution for r-1+r=3 equation: 


Simplifying
r + -1 + r = 3

Reorder the terms:
-1 + r + r = 3

Combine like terms: r + r = 2r
-1 + 2r = 3

Solving
-1 + 2r = 3

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 + 2r = 3 + 1

Combine like terms: -1 + 1 = 0
0 + 2r = 3 + 1
2r = 3 + 1

Combine like terms: 3 + 1 = 4
2r = 4

Divide each side by '2'.
r = 2

Simplifying
r = 2

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