1/6x(5-2/3) 7/8x7+3/8

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/27 15:06:11
1/6x(5-2/3)7/8x7+3/81/6x(5-2/3)7/8x7+3/81/6x(5-2/3)7/8x7+3/81/6x(5-2/3)=1/6x5-1/6x2/3=5/6-1/9=15/18-

1/6x(5-2/3) 7/8x7+3/8
1/6x(5-2/3) 7/8x7+3/8

1/6x(5-2/3) 7/8x7+3/8
1/6x(5-2/3)
=1/6x5-1/6x2/3
=5/6-1/9
=15/18-2/18
=13/18

7/8x7+3/8
=1/8x7x7+1/8x3
=1/8x(49+3)
=1/8x52
=13/2

=1/6X(6-1-2/3)
=1-1/6X5/3
=1-5/18
=13/18

=7/8x7+3/8
=7/8x(8-1)+3/8
=7-1/8+3/8
=7+1/4
=7又4分之1
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