(9分之7-6分之5加4分之3-十八分之7)乘(-36)
=7/9*(-36)-5/6*(-36)+3/4*(-36)-7/18*(-36)
=-28+30-27+14
=-55+44
=-11
(-2分之1加3分之1减4分之1减5分之1)乘(-20)
=(-1/2)*(-20)+1/3*(-20)-1/4*(-20)-1/5*(-20)
=10-20/3+5+4
=19-20/3
=57/3-20/3
=37/3
(9分之7-6分之5加4分之3-十八分之7)乘(-36)
=7/9*(-36)-5/6*(-36)+3/4*(-36)-7/18*(-36)
=-28+30-27+14
=-55+44
=-11
(-2分之1加3分之1减4分之1减5分之1)乘(-20)
=(-1/2)*(-20)+1/3*(-20)-1/4*(-20)-1/5*(-20)
=10-20/3+5+4
=19-20/3
=57/3-20/3
=37/3