Oblicz wartość podanych wyrażeń.
I. 15 1/2 : 62/7 +0.75=
II. 0.5 : 1/3 + 1.7=
III. 9/4 * (1 - 0.2)=
1.
15 1/2: 62/7+0,75= 31/2*7/62+0,75=1,75+0,75=2,5
0,5:1/3+1,7=0,5*3+1,7=1,5+1,7=3,2
9/4*(1-0,2)=2,25*0,8=1,8
I. 15 1/2 : 62/7 +0.75=31/2: 62/7+0,75=31/2*7/62+0,75=7/4+3/4=10/4=5/2=2 1/2II. 0.5 : 1/3 + 1.7= 5/10*3+17/10=15/10+17/10=32/10=3,2III. 9/4 * (1 - 0.2)=9/4*0,8=18/10=1,8
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1.
15 1/2: 62/7+0,75= 31/2*7/62+0,75=1,75+0,75=2,5
0,5:1/3+1,7=0,5*3+1,7=1,5+1,7=3,2
9/4*(1-0,2)=2,25*0,8=1,8
I. 15 1/2 : 62/7 +0.75=31/2: 62/7+0,75=31/2*7/62+0,75=7/4+3/4=10/4=5/2=2 1/2
II. 0.5 : 1/3 + 1.7= 5/10*3+17/10=15/10+17/10=32/10=3,2
III. 9/4 * (1 - 0.2)=9/4*0,8=18/10=1,8