-5/12於2有7/12的差比-1/2與1/6的和多少? 0.123)的5次方*8的4次方=

-5/12於2有7/12的差比-1/2與1/6的和多少? 0.123)的5次方*8的4次方=

(-5/12-2又7/12)-(-1/2+1/6)
= -3+1/3
= -2又2/3
0.125)的5次方*8的4次方=
=1/8×(1/8×8)的4次方
=1/8×1
=1/8
(-18)÷2又1/4*4/9÷(-16)=
= -18×4/9×4/9÷(-16)
= 2/9