Răspuns:
6 a)1:(30/11-3/2)+1/2^3×40/27
1:27/22+1/8×40/27
22/27+5/27
1
b) 101:101/30×333/130)×4
101/10:(101/10×111/130)×4
101/10:11211/1300×4
101/10×1300/11211×4
130/111×4
520/111
7 a)(-3/14+4/7-5/4×7):(-5/28)
(-3/14+4/7-5/28):(-5/28)
5/28:(-5/28)
-1
b)(7/3-25/21):(-74/21)
8/7:(-74/21)
-8/7×21/74
-4×3/37
-12/37
