Question

7-b=2 in trial and erros methad​

Answer 1

Answer:

5

Step-by-step explanation:

7-b=2

take 7 on other side

∴(-b)=2-7

⇒(-b)=(-5)

So, b=5

Answer 2

Answer:

9

Step-by-step explanation:

7-b=2

b=7+2

b =9

I hope you are understand