Answer:
b = D3/ (6+r)
Step-by-step explanation:
6b + rb = D3
Factor b out
b(6+r) = D3
Divide each side by (6+r)
b(6+r)/ (6+r) = D3/ (6+r)
It's 7!
Answer: 10 1/2
Answer: Five times a number increased by 7 is 27 from equation Get the answers you need, now!
Hope this helps :).