Question

answer fastly freinds

Answer 1

Answer:7

Step-by-step explanation:

We have infinitely y many solution

a1/a2 = b1/b2 = c1/c2........(i)

a1 = 2 , b1 = 3 and c1 = 7

a2= k-1 , b2 = k+2 and c2 = 3k

Putting this value in eq. i

2/k-1 = 3/k+2 = 7/3k

2/k-1 = 3/k+2

2(k+2) = 3(k-1)

2k + 4 = 3k - 3

3k - 2k = 4 + 3

k= 7