5038-1.99+12.62-9.01怎么算(简便) 2/5(x-1.4)=1 解方程对不起打错了! 应该是5.38-1.99 !
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![5038-1.99+12.62-9.01怎么算(简便) 2/5(x-1.4)=1 解方程对不起打错了! 应该是5.38-1.99 !](/uploads/image/z/129570-42-0.jpg?t=5038-1.99%2B12.62-9.01%E6%80%8E%E4%B9%88%E7%AE%97%EF%BC%88%E7%AE%80%E4%BE%BF%EF%BC%89+2%2F5%EF%BC%88x-1.4%EF%BC%89%3D1+%E8%A7%A3%E6%96%B9%E7%A8%8B%E5%AF%B9%E4%B8%8D%E8%B5%B7%E6%89%93%E9%94%99%E4%BA%86%EF%BC%81+%E5%BA%94%E8%AF%A5%E6%98%AF5.38-1.99+%EF%BC%81)
5038-1.99+12.62-9.01怎么算(简便) 2/5(x-1.4)=1 解方程对不起打错了! 应该是5.38-1.99 !
5038-1.99+12.62-9.01怎么算(简便) 2/5(x-1.4)=1 解方程
对不起打错了! 应该是5.38-1.99 !
5038-1.99+12.62-9.01怎么算(简便) 2/5(x-1.4)=1 解方程对不起打错了! 应该是5.38-1.99 !
5.38-1.99+12.62-9.01
=(5.38+12.62)-(1.99+9.01)
=18-11
=7
2/5(x-1.4)=1
x-1.4=5/2
x=5/2+1.4
x=3.9
5038-1.99+12.62-9.01
=(5038+12.62)-(1.99+9.01)
=5050.62-11
=5039.62
2/5(x-1.4)=1
2(x-1.4)=5
2x-2.8=5
2x=7.8
x=3.9
5.38-1.99+12.62-9.01
=(5.38+12.62)-(1.99+9.01)
=18-11
=7
2/5(x-1.4)=1
2(x-1.4)=5
2x-2.8=5
2x=7.8
x=3.9
5.38-1.99+12.62-9.01
=(5.38+12.62)-(1.99+9.01)
=18-10
=8
2/5(x-1.4)=1
x-1.4=5/2
x=1.1
5.38-1.99+12.62-9.1
=(5.38+12.62)-(1.99+9.1)
=18-10
=8
50.38-1.99+12.62-9.01
=50.38+12.62-1.99-9.01
=63-11
=52
2/5(x-1.4)=1
x-1.4=2/5
x=1.4+2/5
x=1.8
不懂可追问,有帮助请采纳,谢谢!