25.7-(7.2-4.3)
简算12/[(4.3-2.38)*25]7.7*5.4+7.7+0.36*77(1/2+2/30*12.6...
简算12/[(4.3-2.38)*25] 7.7*5.4+7.7+0.36*77 (1/2+2/30*12.6
展开
展开全部
12/[(4.3-2.38)*25]
=12/1.92*25
=12/12*0.16*25
=1/4
7.7*5.4+7.7+0.36*77
=7.7*(5.4+1+3.6)
=7.7*(10+1)
=77+7.7
=84.7
1/2+2/30*12.6
=1/2+1/30*6.3
=1/2+1/189
=(189+2)/378
=191/378
=12/1.92*25
=12/12*0.16*25
=1/4
7.7*5.4+7.7+0.36*77
=7.7*(5.4+1+3.6)
=7.7*(10+1)
=77+7.7
=84.7
1/2+2/30*12.6
=1/2+1/30*6.3
=1/2+1/189
=(189+2)/378
=191/378
已赞过
已踩过<
评论
收起
你对这个回答的评价是？
推荐律师服务：
若未解决您的问题，请您详细描述您的问题，通过百度律临进行免费专业咨询
