Question

9x-……………………..=-21 has the solution -2. ​

Answer 1

Answer:

9x-3 = -21

9x = -21+3

9x = -18

x = -18/9

x = -2

so answer is 3

Answer 2

Answer:

answer is 3

Step-by-step explanation:

let the equation be

9x-y =-21

9(-2)-y=21 ( solution is -2)

-18+21=y

Therefore y=3