20*3/4-8=15-8=7
36*1/9+15=4+15=19
24*2/5=48/5=9.6
26÷(13/9)=26*9/13=18
解方程.
6x-15×4=五分之三
6x=70+3/5
x=(70+3/5)÷6
x=10.1
简便计算.
72÷十分之九÷720%
=72÷7.2*(10/9)
=10*(10/9)
100/9
五分之一×370%+6.3×五分之一减1.2
=1/5×3.7+6.3×1/5-1.2
=(3.7+6.3)×1/5-1.2
=2-1.2
=0.8
20*3/4-8=15-8=7
36*1/9+15=4+15=19
24*2/5=48/5=9.6
26÷(13/9)=26*9/13=18
解方程.
6x-15×4=五分之三
6x=70+3/5
x=(70+3/5)÷6
x=10.1
简便计算.
72÷十分之九÷720%
=72÷7.2*(10/9)
=10*(10/9)
100/9
五分之一×370%+6.3×五分之一减1.2
=1/5×3.7+6.3×1/5-1.2
=(3.7+6.3)×1/5-1.2
=2-1.2
=0.8