Вычислите. зарание благодарю.
.......................................
1.(10/3)·(9/4)=30/4=15/2=7.5 2.(52/9)·(9/4)=13, 3.13+7.5=20.5 4.23/6-7/12+79/8=(23·12-7·6+79·9)/72=(276-42+711)/72=945/72=105/8 5.(16/15)(105/8)=2·7=14 6.20.5-14=6.5 7.(65/10)·(16/39)=(13/2)·(16/39)=8/3=2 2/3