Odpowiedzi

2010-01-11T20:34:05+01:00
X+y=27
2y+½x=24
x=27-y
2y+½(27-y)=24
x=27-y
2y+²⁷/₂-½y=24
x=27-y
1¹/₂y=24-13½
x=27-y
1½y=10½/1½
x=27-y
y=105/15
x=27-y
y=7
x=27-7
y=7
x=20


x-0,2y=60
½x+0,1y=70
-½x+0,1y=30
0,2y=40/0,2
y=200
½x+0,1y=70
y=200
½x=70-20
y=200
x=25