Question

4x+6/y=15 and 6x-8/y=14,find the value of k,if y=k

Answer 1

y form eq 1

6/y=15-4x

y=6/15-4x put in eq2

6x-(8×15-4x)/6=14

6x-(120-32x)/6=14

by lcm

(36x-120+32x)/6=14

(68x-120)/6=14

68x-120=14×6

68x-120=84

68x=120+84

x= 204/68

x=3 put in eq 1

4(3)+6/y=15

12+6/y=15

6/y=15-12

6/y=3

y=6/3

y=2

so k=2=y

i hop it help to u

thank