А) 6,3=6.3;б) -3,8=3.8;в) 0,3=0.3;<span>г) -5 1/2=5 1/2. </span>
<span>(2/15+7/12)*30/43-2: 2 1/3 * 5/32=
=43/60</span>*30/43-2: 2 1/3 * 5/32=
=1/2-2: 2 1/3 * 5/32=
<span>=1/2-6/7*5/32=
=1/2-15/112=
=41/112
</span>2/15+7/12=8/60+35/60=43/60
43/60*30/43=1/2
2: 2 1/3=2/1:7/3=2/1*3/7=6/7
6/7*5/32=3/7*5/16=15/112
1/2-15/112=56/112-15/112=41/112
48/(1+3)*1=12
48/(1+3)*3=36
30/(1+3)*1=7,5
30/(1+3)*3=22,5
1. 3,7 - 4,8 = -1,1
2. -5,2 - 4,7 = -9,9
3. -5,6 - (-3,8) = 1,8