> 数学 >
简算:13÷39+(1/26+2/39)×13
人气:144 ℃ 时间:2020-03-08 01:49:31
解答
13÷39+(1/26+2/39)×13
=1/3+1/26×13+2/39×13
=1/3+1/2+2/3
=1/3+2/3+1/2
=1+1/2
=1.5
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版