if 7x=4y, and y/z=7/5 , then x/z=

Answer 1

Rearrange 7x=4y
<=> y = 7x/4

Substitute into y/z = 7/5
<=> 7x/4z = 7/5

Cancelling common factor (7) and rearranging:
.: x/z = 4/5