решите :
(1600+t):80=60
2000:F-670=1330
1300-(d-678)=400
1600:80+t=60
(2000:600):f=70
d-(1300-678)=400
(1600+t):80=60
2000:F-670=1330
1300-(d-678)=400
1600:80+t=60
(2000:600):f=70
d-(1300-678)=400
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Answers & Comments
t=0,75-1600=-1599,25
2) 2000/f=1330+670=2000
f=2000/2000=1
3) d-678=1300-400=900
d=900+678=1578
4) t=60-(1600/80)=60-20=40
5) 10/3=70f
f=10/3*1/70=1/21
6) d=400-622=-222