Question

7/13×4/5+6/13÷4/5 （7/24－3/16)÷1/8 7/13×4/5+6/13÷5/4简便运算 /是分数

Answer 1

7/13×4/5+6/13÷4/5

=7/13*4/5+6/13*5/4

=2/13*(14/5+15/4)

=2/13*(14*4+15*5)/20

=2*(56+75)/13*20

=262/260

=131/130

（7/24－3/16)÷1/8

=(7/24-3/16)*8

=7/3-3/2

=14/6-9/6

=5/6

7/13×4/5+6/13÷5/4

=7/13*4/5+6/13*4/5

=4/5*(7/13+6/13)

=4/5*1

=4/5