r-2=7

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Solution for r-2=7 equation: 


Simplifying
r + -2 = 7

Reorder the terms:
-2 + r = 7

Solving
-2 + r = 7

Solving for variable 'r'.

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

Add '2' to each side of the equation.
-2 + 2 + r = 7 + 2

Combine like terms: -2 + 2 = 0
0 + r = 7 + 2
r = 7 + 2

Combine like terms: 7 + 2 = 9
r = 9

Simplifying
r = 9

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