Question

0.14*5/7+3/5*0.625= (7/10+5/6+4/5）*30= 5/9*0.2+（7.2*1/20-6÷50) 3.6*[2 ÷（4/5-0.6）]

3/4÷[(1/6+1/20)*(1÷3/20)] 写过程

Answer 1

0.14*5/7+3/5*0.625
=0.1+3/5×5/8
=0.1+3/8
=0.475
(7/10+5/6+4/5）*30
=7/10×30+5/6×30+4/5×30
=21+25+24
=70
5/9*0.2+（7.2*1/20-6÷50)
=5/9×1/5+0.36-0.12
=1/9+0.24
=79/225
3.6*[2 ÷（4/5-0.6）]
=3.6×2×(4/5-3/5)
=7.2×1/5
=1.44
3/4÷[(1/6+1/20)*(1÷3/20)]
=3/4÷[(1/6+1/20)×20/3]
=3/4÷[10/9+1/3]
=3/4÷13/3
=9/52