当x=3,y=3分之1时,求代数出3xy-[2xy-2(xy-2分之3xy)+xy]+3xy的值

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/18 01:31:36
当x=3,y=3分之1时,求代数出3xy-[2xy-2(xy-2分之3xy)+xy]+3xy的值
x){wrNӎ'; Mߦlcӓ݋M}qEn0U@AMXm {lg~ FP-X\YE%H(1)33O7"b6yv o

当x=3,y=3分之1时,求代数出3xy-[2xy-2(xy-2分之3xy)+xy]+3xy的值
当x=3,y=3分之1时,求代数出3xy-[2xy-2(xy-2分之3xy)+xy]+3xy的值

当x=3,y=3分之1时,求代数出3xy-[2xy-2(xy-2分之3xy)+xy]+3xy的值
3xy-[2xy-2(xy-2分之3xy)+xy]+3xy
=6xy-[2xy-2xy+3xy+xy)
=6xy-4xy
=2xy
=2×3×3分之1
=2