35×12+350÷7054.2-29+4.8-1690.7÷[（56-14）×24]14÷x=23．

Question

35×12+350÷70
54.2-(2)/(9)+4.8-(16)/(9)
0.7÷[（(5)/(6)-(1)/(4)）×24]
(1)/(4)÷x=(2)/(3)．

Answer 1

①35×12+350÷70
=420+5
=425
②54.2-(2)/(9)+4.8-(16)/(9)
=（54.2+4.8）-（(2)/(9)+(16)/(9)）
=59-2
=57
③0.7÷[（(5)/(6)-(1)/(4)）×24]
=0.7÷[(5)/(6)×24-24×(1)/(4)]
=0.7÷14
=0.05
④(1)/(4)÷x=(2)/(3)
(1)/(4)÷x×x=(2)/(3)×x
   (2)/(3)×x=(1)/(4)
(2)/(3)×x÷(2)/(3)=(1)/(4)÷(2)/(3)
       x=(3)/(8)