Question

45×（3分之2+2分之1-16分之1-24分之7）,脱式计算.

Answer 1

45*(2/3+1/2-1/16-7/24)

=45*(2/3-7/24)+45*(1/2-1/16)

=45*3/8+45*7/16

=45*6/16+45*7/16

=45/16*(6+7)

=585/16