解方程:2(x+3)=32 8(x-13)64 1.5(7-x)=4.5
问题描述:
解方程:2(x+3)=32 8(x-13)64 1.5(7-x)=4.5
答
2(x+3)=32
x+3=16
x=13
8(x-13)=64
x-13=8
x=21
1.5(7-x)=4.5
7-x=3
x=40.5(6+x)=9 (x+3.2)÷3=8 (x-0.6)÷0.4=1.20.5(6+x)=96+x=16 x=10 (x+3.2)÷3=8 x+3.2=24 x=20.8(x-0.6)÷0.4=1.2 x-0.6=0.48 x=1.08根据实际情况回答问题:1.What do you need for your picnic?2.Do you need any bells on Christma Day?我英语不好,你可上百度在线翻译。