A = (a+b)/2
2*A = 2*(a+b)/2 ... multiply both sides by 2
2A = a+b
2A-a = a+b-a ... subtract 'a' from both sides to isolate b
2A-a = b
b = 2A-a
Answer: b = 2A-a
B. Is the correct answer. For part B, he can buy 15 balloons since X=15. Plug this back into the equation to check: 2(15)+20=50.
2(15)=30+20=50.
Answer:
what exactly is the question?
Step-by-step explanation:
Answer:
1) 9. 2) 11. 3) art and science
This is your answer ☺️☺️☺️
Ratio of cat : to dog = 40 : 20 = 2:1