a) 12 + 9 b) 30 – (-32) c) 61 + (+14) d) 56 – (-22) nhanh giúp tui vứi 25/11/2021 Bởi Maria a) 12 + 9 b) 30 – (-32) c) 61 + (+14) d) 56 – (-22) nhanh giúp tui vứi
@py Bài làm : a) `12 + 9 = 21` b) `30 – (-32) = 62` c) `61 + (+14) = 75` d) `56 – (-22) = 78` Bình luận
$a)$ $12$ $+$ $9$ $=$ $21$ $b)$ $30$ $-$ $(-32)$ $=$ $30$ $+$ $32$ $=$ $62$ $c)$ $61$ $+$ $(+14)$ $=$ $61$ $+$ $14$ $=$ $75$ $d)$ $56$ $-$ $(-22)$ $=$ $56$ $+$ $22$ $=$ $78$ Bình luận
@py
Bài làm :
a) `12 + 9 = 21`
b) `30 – (-32) = 62`
c) `61 + (+14) = 75`
d) `56 – (-22) = 78`
$a)$ $12$ $+$ $9$
$=$ $21$
$b)$ $30$ $-$ $(-32)$
$=$ $30$ $+$ $32$
$=$ $62$
$c)$ $61$ $+$ $(+14)$
$=$ $61$ $+$ $14$
$=$ $75$
$d)$ $56$ $-$ $(-22)$
$=$ $56$ $+$ $22$
$=$ $78$