Question

x+m= 45 y+n=40 m=5 cuanto vale n en x/y=m/n

Answer 1

1)
x=45-m
x=45-5
x= 40

y=40-n

m=5

2)
x/y=m/n
40/40-n=5/n
40n=200-5n
45n=200
n=200/45
n=40/9

3)
40/320/9=5/40/9
9/8=9/8