Đáp án: + Giải thích các bước giải:
`(24-15)-(24+15)`
`=9-39`
`=-30`
Đáp án:
`= 24 - 15 - 24 - 15`
`= (24 - 24) - (15 + 15)`
`= 0 - 30`
`= -30`
$#dariana$
Traffic in Vietnam is becomins worse,.You should write a paragraph about 130-150 words to give some solutions
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