Question

混合运算要写出过程,快5分之2-6分之1加5分之3 30分之1加5分之3-3分之1 4分之3加10分之7-4分之3-5分

Answer 1

解

2/5-1/6+3/5

=(2/5+3/5)-1/6

=1-1/6

=5/6

1/30+3/5-1/3

=1/30+18/30-10/30

=19/30-10/30

=3/10

3/4+7/10-3/4-2/5

=(3/4-3/4)+(7/10-4/10)

=3/10

9/10+(1/2-2/5)

=9/10+(5/10-4/10)

=9/10+1/10

=1

1/4+(5/6-7/12)

=1/4+(10/12-7/12)

=1/4+1/4

=1/2

3-8/9-4/9+1/3

=27/9-8/9-4/9+1/3

=5/3+1/3

=2