2(x十x十0.5)=9·8怎么算

2(x十x十0.5)=9·8怎么算
2024-12-03 20:20:23
推荐回答(5个)
回答1:

2(x+x+0.5)=9.8
2(2x+0.5)=9.8
2x+0.5=9.8÷2
2x+0.5=4.9
2x=4.9-0.5
2x=4.4
x=4.4÷2
x=2.2

回答2:

x+x+0.5=4.9
2x=4.4
x=2.2

回答3:

4x+1=9.8
4x=8.8
x=2.2

回答4:

4x+1-1=9.8-1 4ⅹ=8.8 4x÷4=8.8÷4 ⅹ=2.2

回答5:

2x+0.5=4.9
2x=4.4
x=2.2