回答:
0.4:8/9
=(0.4×9):(8/9×9)
=3.6:8
=(3.6×10):(8×10)
=36:80
=(36÷4):(80÷4)
=9:20
=9/20
答:比值是9/20,最简整数比是9:20。
0.4:九八之八的比值是(20分之9或者0.45),
最简整数比是(9比20),
0.4:(8/9)
=4:(80/9)
=36:80
=9:20
=9/20
=0.45
比值:
0.4:8/9
=2/5/(8/9)
=2/5×9/8
=9/20
=0.45
最简整数比是:
9:20
0.4:8/9
=2/5×9/8
=9/20
9/20=9:20
原式=2/5×9/8
=9/20
=9:20.