(2+九分之二)*18 (49+七分之一)÷7 3.47-8÷17-十七分之三*3 (五分之三+四分之一)*60-27 求简便过程
答案:1 悬赏:50 手机版
解决时间 2021-01-11 07:27
- 提问者网友:疯孩纸
- 2021-01-10 06:52
(2+九分之二)*18 (49+七分之一)÷7 3.47-8÷17-十七分之三*3 (五分之三+四分之一)*60-27 求简便过程
最佳答案
- 五星知识达人网友:人類模型
- 2021-01-10 07:46
(2+2/9)×18
=2×18+2/9×18
=36+4
=40
(49+1/7)÷7
=(49+1/7)×1/7
=49×1/7+1/7×1/7
=7+1/49
=7又1/49
47-8÷17-3/17×3
=47-8×1/17-3/17×3
=47-8/17-9/17
=47-(8/17+9/17)
=47-1
=46
(3/5+1/4)×60-27
=3/5×60+1/4×60-27
=36+15-27
=51-27
=24
=2×18+2/9×18
=36+4
=40
(49+1/7)÷7
=(49+1/7)×1/7
=49×1/7+1/7×1/7
=7+1/49
=7又1/49
47-8÷17-3/17×3
=47-8×1/17-3/17×3
=47-8/17-9/17
=47-(8/17+9/17)
=47-1
=46
(3/5+1/4)×60-27
=3/5×60+1/4×60-27
=36+15-27
=51-27
=24
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