2.Oblicz: a) 3/8+5/6 b) 3 6/7-1/4 C) 1 3/5*7/8 d) 2 3/8:1 2/7 e)(3,5+15,08)-11,46 f) 2,375+5,26:4 g) 3/4+0,26+4/5:1/10 h) 85:5+7*9-4*8 i) 13+(77-9*3):10 PROSZE NA DZIŚ
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a)3/8+5/6=9/24+20/24=29/24=1 5/24
b)6/7-1/4=24/28-7/28=17/28
c)1 3/5*7/8=8/5*7/8=7/5=1 2/5(1,4)
d)2 3/8:1 2/7=19/8:9/7=19/8*7/9=133/72=1 56/77
e)(3,5+15,08)-11,46=18,58-11,16=7,42
f)2,375+5,26:4=2,375+526/100*1/4=2,375+1,315=3,69
g)3/4+0,26+4/5:1/10=3/4+26/100+4/5*10=3/4+26/100+8=75/100+26/100+8=101/ 100+8 = 1 1/100+8=9,01
h)85:5+7*9-4*8=17+63-32=80-32=48
i)13+(77-9*3):10=13+(77-27):10=13+50*1/10=13+5=18
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