Odpowiedź :
x+y=92
40/100x=3/4y/*10/4
x+y=92
x=15/8y
15/8y+y=92
x=15/8y
2 7/8y=92
x=15/8y
23/8y=92/*8/23
x=15/8y
y=32
x=15/8*32
y=32
x=60
40/100x=3/4y/*10/4
x+y=92
x=15/8y
15/8y+y=92
x=15/8y
2 7/8y=92
x=15/8y
23/8y=92/*8/23
x=15/8y
y=32
x=15/8*32
y=32
x=60
I liczba ---x
II liczba ----y
x+y=92
0,4x=3/4y
x=92-y
0,4(92-y)=0,75y
x=92-y
36,8-0,4y-0,75y=0
x=92-y
-1,15y=-36,8
x=92-y
y=32
x=92-32
y=32
x=60
y=32
II liczba ----y
x+y=92
0,4x=3/4y
x=92-y
0,4(92-y)=0,75y
x=92-y
36,8-0,4y-0,75y=0
x=92-y
-1,15y=-36,8
x=92-y
y=32
x=92-32
y=32
x=60
y=32