1×9+2=11
12×9+3=111
123×9+4=1111
1234×9+5=11111
12345×9+6=111111
123456×9+7=1111111.
故答案为:1234×9+5=11111,12345×9+6=111111,123456×9+7=1111111.
1×9+2=11
12×9+3=111
123×9+4=1111
1234×9+5=11111
12345×9+6=111111
123456×9+7=1111111.
故答案为:1234×9+5=11111,12345×9+6=111111,123456×9+7=1111111.