Question

能简算的要简算15分之7-19分之5+15分之8 4分之3+7分之2-14分之32分之1-（13分之5+26分之3） 1

Answer 1

7/15-5/19+6/15

=7/15+6/15-5/19

=13/15-5/19

=247/285-75/285

=172/285

3/4+2/7-3/14

=3/4+4/14-3/14

=3/4+1/14

=21/28+2/28

=23/28

1/2-(5/13+3/26)

=1/2-(10/26+3/26)

=1/2-1/2

=0

7/11-(7/11-4/15)

=7/11-7/11+4/15

=4/15

3/4-(1/4+1/2)

=3/4-1/4-1/2

=1/2-1/2

=0

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

=9/10+1/10-1/2

=1-1/2

=1/2