7a+3a=(7+3)a=(2)-7a+3a=_______=_______(3)-7a-3a=_______=_______(4)若a与b互为倒数,则a+b=______,若A<0,b>0. a(5)若a与b互为倒数,则a*b=______.则ab_____0,----____0
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 14:40:08
![7a+3a=(7+3)a=(2)-7a+3a=_______=_______(3)-7a-3a=_______=_______(4)若a与b互为倒数,则a+b=______,若A<0,b>0. a(5)若a与b互为倒数,则a*b=______.则ab_____0,----____0](/uploads/image/z/5226367-31-7.jpg?t=7a%2B3a%3D%287%2B3%29a%3D%282%29-7a%2B3a%3D_______%3D_______%283%29-7a-3a%3D_______%3D_______%284%EF%BC%89%E8%8B%A5a%E4%B8%8Eb%E4%BA%92%E4%B8%BA%E5%80%92%E6%95%B0%2C%E5%88%99a%2Bb%3D______%2C%E8%8B%A5A%EF%BC%9C0%2Cb%EF%BC%9E0.++++++++++++++++++++++++++++++++++++++++++++++++a%EF%BC%885%EF%BC%89%E8%8B%A5a%E4%B8%8Eb%E4%BA%92%E4%B8%BA%E5%80%92%E6%95%B0%2C%E5%88%99a%2Ab%3D______.%E5%88%99ab_____0%2C----____0)
x)3O6N06RFx ],&t^dG_ғ]aҳtvLN*q|gN=HtIffeTUNBdqy"KzI>X5TllFTZa4Hd%&24H&
M~
SM{k