18-r=12 18 - r = 12 ​

Question

18-r=12

`18 - r = 12`
​

Answer 1

r = 6

Explanation:

18 - r = 12 subtract 18 from both sides

18 - 18 - r = 12 - 18

-r = -6 change the signs

r = 6

Check

18 - 6 = 12 CORRECT