Question

If X/Y=4/5 And 7X+6Y=29, Find The Value of y.

Answer 1

Answer:

y=69

Step-by-step explanation:

x/y=4/5

by cross multipliying

5x-4y=1----(1)

7x+6y=29----(2)

multiplying (2)by 5 then we get

35x+30y=145---(3)

mutilplying (1)by 7we get

35x-28y=7--(4)

solving (3) and (4) we get

2y=138

y=69.