1целая7/9 *2целых2/5:1целая 3/5

1 <span>7/9</span>*2 <span>2/5</span>= <span>1*9 + 7/9 *</span><span>2*5 + 2/5  </span>=<span>16/9*</span><span>12/5</span>=<span>16 *12/9 *5</span>=  <span>192/45</span>=<span>64*3/15*3=  </span>=<span>64/15</span>=4 <span>4/15

4 4/15 : 1 3/5 = 64/15:8/5= 64/15*5/8= 64 *5/15 *8=320/120 =8*40/3*40=8/3 =2  2/3</span><span>
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