3(x+2.1)=10.5要有过程

2024-12-12 17:15:54
推荐回答(2个)
回答1:

 

回答2:

2(x+2.1)=10.5 2(x+2.1)÷2=10.5÷2
x+2.1=5.25
x+2.1-2.1=5.25-2.1
x=3.15