脱式计算(要过程):
问题描述:
脱式计算(要过程):
8.85-3.38+1.15-4.62= (1/3+1/4)÷(4/5÷4-1/10)=
73×101-73= 56×4.1×125=
9.8-6x=5又4/5 2x+40%x=6 (x-7)÷5=14
答
脱式计算(要过程):
8.85-3.38+1.15-4.62
=(8.85+1.15)-(3.38+4.62)
=10-8
=2
(1/3+1/4)÷(4/5÷4-1/10)
=7/12÷(1/5-1/10)
=7/12÷1/10
=35/6
73×101-73
=73×(101-1)
=73×100
=7300
56×4.1×125
=7×8×4.1×125
=(125×8)×(7×4.1)
=1000×28.7
=28700
解方程(要过程):
9.8-6x=5又4/5
6x=9.8-5.8
6x= 4
x=2/3
2x+40%x=6
x=6÷2.4
x=2.5
(x-7)÷5=14
x=77