1. 2,6 + 3,4 / 1,7 + 6/7 * ( -2 1/3 ) =
2, 2,5 *[ 8/15 - (-0,15)] + 5/24 =
3, 0,15 * 5/6 - ( 0,7 * 3/7 - 4/5 ) / ( -1 1/2) =
4. 0,75 - ( 2 1/3 - 1 1/9) / 4 =
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1. -7/5
2. 23/12
3. -5/24
4. -541/450
PS: wszystko liczone w naukowym kalkulatorze :))
1)
2.6+2-2= 2,6
2)
2,5*41/60+5/24=41/24+5/24=46/24=1 11/12
3)
1/8-1/3=3/24-8/24= -5/24
4)
0,75-11/36= 27/36-11/36=16/36=4/9