r-2s+1=2

Solution for r-2s+1=2 equation:

Simplifying
r + -2s + 1 = 2

Reorder the terms:
1 + r + -2s = 2

Solving
1 + r + -2s = 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 + r + -1 + -2s = 2 + -1

Reorder the terms:
1 + -1 + r + -2s = 2 + -1

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

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

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

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

Simplifying
r = 1 + 2s