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y-ewa
x=y-3
(x+2)+(y+2)=91 (y-3+2)+y+2=91 2y=92 y=46lat x= 43lata
za piec lat y=51 x=48
y-Ewa
x=y-3
(x+2)+(y+2)=91
x=y-3
x+2+y+2=91
x=y-3
x+y=87
x=y-3
y-3+y=87
x=y-3
2y=90
x=y-3
y=45
x=42
y=45
Ewa ma 45 lat, a Marek 42.
45 + 5 = 50
42 + 5 = 47
Odp.Za 5 lat Marek będzie miał 47 lat, a Ewa 50.