"65-7减3"...65-7减3
"65-43减7"...65-43减7
"65+17减三十"...65+17减三十
"65-7减四十"...65-7减四十
"65-7减7-40等于几"...65-7减7-40等于几
"65-6减三十"...65-6减三十
"67-7减三十"...67-7减三十
"65+27减7"...65+27减7
"63+7减五十"...63+7减五十
"65-减7-4"...65-减7-4