76乘17等於多少?
= 70*17 +6 *17 =1292
17乘46等於多少
17x46
=17(50-4)
=850-68
=782
(一72)—(—37)—(—22)—17,
-72+37+22-17=-30
(-72)-(-37)-(-22)-17這道題怎麼做
(-72)-(-37)-(-22)-17
=-72+37+22-17
=-72+22+37-17
=-50+20
=-30