1. 4/7*(0.2+1/4)=4/7*45/100=45/155=9/31
2. 5\8*4,2-(1\4)DO POTĘGI 2=21/80-1/16=0.2625-0.0625=0.2
3. (I 2\5+0,5):2= 1,9:2=0.85
4. 4,5-3\4*1\2=4.5-0.375=4.125
Myśle że pomogłam :)
1.4\7*(0,2+1\4)=4/7*(1/5+1/4)=4/7*(4/20+5/20)=4/7*9/20=9/35
2.5\8*4,2-(1\4)DO POTĘGI 2 =5/8*21/5-1/16=21/8-1/16=42/16-1/16=41/16=2 9/16
3.(1 I 2\5+0,5):2
4.4,5-3\4*1\2 =9/2-3/4*1/2=9/2-3/8=36/8-3/8=33/8
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1. 4/7*(0.2+1/4)=4/7*45/100=45/155=9/31
2. 5\8*4,2-(1\4)DO POTĘGI 2=21/80-1/16=0.2625-0.0625=0.2
3. (I 2\5+0,5):2= 1,9:2=0.85
4. 4,5-3\4*1\2=4.5-0.375=4.125
Myśle że pomogłam :)
1.4\7*(0,2+1\4)=4/7*(1/5+1/4)=4/7*(4/20+5/20)=4/7*9/20=9/35
2.5\8*4,2-(1\4)DO POTĘGI 2 =5/8*21/5-1/16=21/8-1/16=42/16-1/16=41/16=2 9/16
3.(1 I 2\5+0,5):2
4.4,5-3\4*1\2 =9/2-3/4*1/2=9/2-3/8=36/8-3/8=33/8