Respuesta :

Answer:

b=7/3(A-5)

Step-by-step explanation:

Subtract A on both the sides.

A- 3b/7-A=5-A

- 3b/7=5-A

Multiply by 7 on both the sides.

-3b=7(5-A)

Divide by -3 on both the sides.

b=7/3(A-5)