来自梁燕的问题
Yorkhas$72.Sallyhas$12.inordertoletSallyhave3timestheamountofYork,howmuchshouldYorkgiveSally?
Yorkhas$72.Sallyhas$12.inordertoletSallyhave3timestheamountofYork,howmuchshouldYorkgiveSally?


Yorkhas$72.Sallyhas$12.inordertoletSallyhave3timestheamountofYork,howmuchshouldYorkgiveSally?
Yorkhas$72.Sallyhas$12.inordertoletSallyhave3timestheamountofYork,howmuchshouldYorkgiveSally?
纽约有72美元.莎莉12美元,让莎莉有3倍量的纽约,纽约给多少莎莉?
设纽约给x,则有
12+x=3(72-x)
12+x=216-3x
4x=204
x=51