Question

4分之3-2分之7+(-6分之1)-(-3分之2)-1 算式

Answer 1

原式= 3/4 - 7/2 - 1/6 + 2/3 - 1

=9/12 - 42/12 - 2/12 + 8/12 - 12/12

=(9 - 42 - 2 + 8 - 12 )/12

= -39/12

= -13/4 (4分之13)