-r+1=2

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Solution for -r+1=2 equation: 


Simplifying
-1r + 1 = 2

Reorder the terms:
1 + -1r = 2

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

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

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

Divide each side by '-1'.
r = -1

Simplifying
r = -1

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