Question

[(1.5+3分之2)÷3分之13-0.9]÷6分之7

Answer 1

[(1.5+2/3)÷(13/3)-0.9]÷(7/6)

=[(3/2+2/3)÷(13/3)-0.9]÷(7/6)

=[(9/6+4/6)÷(13/3)-0.9]÷(7/6)

=[(13/6)÷(13/3)-0.9]÷(7/6)

=[(13/6)*(3/13)-0.9]÷(7/6)

=[(1/2)-(9/10)]÷(7/6)

=(5/10)-(9/10)]÷(7/6)

=[-(4/10)]*(6/7)

=-12/35