计算．(38-16)×48217×34×217(54+512)×21534-310÷12．

Question

计算．
((3)/(8) -(1)/(6) )×48
(2)/(17) ×34×(2)/(17)
((5)/(4) +(5)/(12) )×(2)/(15)
(3)/(4) -(3)/(10) ÷12 ．

Answer 1

（1）（ (3)/(8) - (1)/(6) ）×48
= (3)/(8) ×48- (1)/(6) ×48
=18-8
=10；

（2） (2)/(17) ×34× (2)/(17)
=4× (2)/(17)
= (8)/(17) ；

（3）（ (5)/(4) + (5)/(12) ）× (2)/(15)
= (5)/(4) × (2)/(15) + (5)/(12) × (2)/(15)
= (1)/(6) + (1)/(18)
= (2)/(9) ；

（4） (3)/(4) - (3)/(10) ÷12
= (3)/(4) - (3)/(10) × (1)/(12)
= (3)/(4) - (1)/(40)
= (29)/(40) ．