Ответы на вопрос:
А)6 6/11*3/4: 2 2/5*2 1/5=(72*3*5*11)/(11*4*12*5)=9/2=4 1/2 б)9 1/3: 7/8*7/16: 14/27)=(28*8*7*27)/(3*7*16*14)=9 в)5/14+18/35+(1 1/4-5/14): (5/12*5/12)=6 1/70 1)1 1/4-5/14=35/28-10/28=25/28 2)5/12*5/12=25/144 3)25/28: 25/144=25/28*144/25=36/7 4)5/14+18/35+36/7=(25+36+360)/70=421/70=6 1/70 г)(7/12*7//15*8/15)+4/5*(7/10-9/16)=199/1200 1)7/10-9/16=(56-45)/80=11/80 2)4/5*11/80=11/100 3)7/12*7/12=49/144 4)8/15*8/15=64/225 5)49/144-64/225+11/100=(49*25-64*16+11*36)/3600= =(1225-1024+396)/3600=597/3600=199/1200
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