发布网友 发布时间:2023-08-08 00:03
共1个回答
热心网友 时间:2023-09-17 20:38
7/9-(5/6-2/9)
=(7/9+2/9)-5/6
=1-5/6
=1/6
=6分之1
7/9-(3/4-2/9)
=7/9+2/9-3/4
=1-3/4
=1/4
九分之4-括号4/9-3分之二括弧等于
=4/9-(4/9-2/3)
=2/3
分子=9+7+2/7+2/9
所以所求的答案=(9+7+2/7+2/9)/(2/7+2/9)
=(9+7)/(2/7+2/9)+(2/7+2/9)/(2/7+2/9)
=16/(32/63)+1
=63/2+1
=65/2
5/9+(4/9-2/7)
=5/9+4/9-2/7
=1-2/7
=5/7
分数加减法,异分母分数加减法,先通分,再按照同分母分数加减法法则进行计算,分母不变,分子进行加减,最后约分。
同分母分数相加,分母不变,分子相加,最后要化成最简分数。
异分母分数相加,先通分,再按同分母分数相加法去计算,最后要化成最简分数。
同分母分数相减,分母不变,分子相减,最后要化成最简分数。
异分母分数相减,先通分,再按同分母分数相减法去计算,最后要化成最简分数。
九分之二加九分之二加九分之二加九分之一等于括号乘于括号加括号等于
2/9+2/9+2/9+2/9
=2/9*4
=8/9
36×括号5/18+9分之二括号除以2%
=(36×5/18+36×9分之2)×50
=(10+8)×50
=18×50
=900
5/9-(5/9-2/5)
= 5/9-5/9+2/5
= 0+2/5
= 2/5
2/9+1又5/6-(2/9)+1/2
=(2/9+2/9)+(1又5/6+1/2)
=4/9+2又1/3
=2又7/9
9分之14-(15+5/9-7分之2)
=9分之14-15-9分之5+7分之2
=9分之14-9分之5-15+7分之2
=1-15+7分之2
=-14+7分之2
=-13又7分之5