Oblicz :
a) 3/4 x 5/6 : 1/2 =
b) 7/9 : 2/3 x 6/7 =
c) 3 3/4 x 2 2/5 - 4 3/8
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a)3/4 x 5/6 : 1/2 = 3/4 x 5/6 x 2/1 = 15/24 x 2= 30/24 = 1cała i 6/24 ( skracam 6 przez 6 i 24 na 6 co daje mi 4) = 1 i 1/4
b) 7/9 : 2/3 x 6/7 = 7/9 x 3/2 x 6/7 = 21/18 x 6 /7 = 7/6 x 6/7 = 1
c) 3 3/4 x 2 2/5 - 4 3/8 = 15/4 x 12/5 - 4całe i 3/8= 9 - 4całe i 3/8 = 4całe i 5/8
a) 3/4*5/6:1/2=15/24*2/1=30/24=1 6/24=1 1/4
b)7/9:2/3*6/7=9/7*12/21=108/147
c)3 3/4*2 2/5-4 3/8=15/4*12/5-4 3/8=180/20-4 3/8=9-4 3/8=4 5/8