(2又1/3-3又1/2+1又4/45)÷(-1又4/6)

(2又1/3-3又1/2+1又4/45)÷(-1又4/6)
(2又1/3-3又1/2+1又4/45)÷(-1又4/6)

(2又1/3-3又1/2+1又4/45)÷(-1又4/6)
(2又1/3-3又1/2+1又4/45)÷(-1又4/6)
=(2又1/3-3又1/2+1又4/45)×(-3/5)
=(7/3-7/2+49/45)×(-3/5)
=7/3×(-3/5)-7/2×(-3/5)+49/45×(-3/5)
=-7/5+21/10-49/75
=7/10-49/75
=105/150-98/150
=7/150