7r-21=14

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Solution for 7r-21=14 equation: 


Simplifying
7r + -21 = 14

Reorder the terms:
-21 + 7r = 14

Solving
-21 + 7r = 14

Solving for variable 'r'.

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

Add '21' to each side of the equation.
-21 + 21 + 7r = 14 + 21

Combine like terms: -21 + 21 = 0
0 + 7r = 14 + 21
7r = 14 + 21

Combine like terms: 14 + 21 = 35
7r = 35

Divide each side by '7'.
r = 5

Simplifying
r = 5

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