2 câu trả lời
121
+
1232
1353
`=>` `121 + 1232 = 1353`
-----------------------------------
232
+
123
355
`=>` `232 + 123 = 355`
-----------------------------------
`13-12+(123)`
`=` `13-12+123`
`=` `1 + 123`
`=` `124`
121
+
1232
1353
`=>` `121 + 1232 = 1353`
-----------------------------------
232
+
123
355
`=>` `232 + 123 = 355`
-----------------------------------
`13-12+(123)`
`=` `13-12+123`
`=` `1 + 123`
`=` `124`
