r-5-9=7

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Solution for r-5-9=7 equation: 


Simplifying
r + -5 + -9 = 7

Reorder the terms:
-5 + -9 + r = 7

Combine like terms: -5 + -9 = -14
-14 + r = 7

Solving
-14 + r = 7

Solving for variable 'r'.

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

Add '14' to each side of the equation.
-14 + 14 + r = 7 + 14

Combine like terms: -14 + 14 = 0
0 + r = 7 + 14
r = 7 + 14

Combine like terms: 7 + 14 = 21
r = 21

Simplifying
r = 21

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