100x7.9+184x2.1+84x2.9
答案:3 悬赏:60 手机版
解决时间 2021-02-12 02:22
- 提问者网友：兔牙战士
- 2021-02-11 08:38
100x7.9+184x2.1+84x2.9
最佳答案
- 五星知识达人网友：人间朝暮
- 2021-02-11 09:20
100x7.9+184x2.1+84x2.9
=100x7.9+(100+84)x2.1+84x2.9
=100x7.9+100×2.1+84x2.1+84x2.9
=100×（7.9+2.1）+84×（2.1+2.9）
=100×10+84×5
=1000+420
=1420
=100x7.9+(100+84)x2.1+84x2.9
=100x7.9+100×2.1+84x2.1+84x2.9
=100×（7.9+2.1）+84×（2.1+2.9）
=100×10+84×5
=1000+420
=1420
全部回答
- 1楼网友：舊物识亽
- 2021-02-11 11:48
1420
- 2楼网友：纵马山川剑自提
- 2021-02-11 10:39
100x7.9+184x2.1+84x2.9
=100x7.9+100x2.1+84x2.1+84x2.9
=100x(7.9+2.1)+84x(2.1+2.9)
=100x10+84x5
=1000+420
=1420
=100x7.9+100x2.1+84x2.1+84x2.9
=100x(7.9+2.1)+84x(2.1+2.9)
=100x10+84x5
=1000+420
=1420
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