Question

b:a+c=3:4and a:b+c=5:9​

Answer 1

Answer:

Step-by-step explanation:

b : a + c = 3 : 4

b/a + c = 3/4

4b = 3a + 4c

a : b + c = 5 : 9

a/b + c = 5/9

9a = 5b + 5c

9a - 5b - 5c = 0