if (7a-5b) : (7a+3b) = 3:8, find a:b
please answer with steps.
Answers
Answered by
4
Answer:
The answer is 7:5
Step-by-step explanation:
7a-5b = 3
7a+3b 8
Cross - Multiplication
8(7a-5b) = 3(7a+3b)
56a - 40b = 21a + 9b
56a - 21a = 9b + 40b
35a = 49b
a/b = 49/35 = 7/5
a:b = 7:5
Similar questions