"82-81等于几"...82-81等于几
"82-8等于多少"...82-8等于多少
"82-几等于几"...82-几等于几
"82-78等于几"...82-78等于几
"82+83等于几"...82+83等于几
"82-68等于几"...82-68等于几
"82+80等于几"...82+80等于几
"82+78等于几"...82+78等于几
"82+84等于几"...82+84等于几
"82+85等于几"...82+85等于几
