中一數學功課問題,聽日交(10分!!!!!!!!!!!!!!!!)

聽日就交
即刻做比你睇
[(+13)÷(-0.5)-(-16)×(+0.5)]÷[(0.75)×(-4)]
=[-26-(-8)]÷3
=-6
你最好將d小數轉做分數睇
0.5=1/2
-0.5=-1/2
0.75=3/4
[+(1-2/3)-(-12)×(+3/8)]÷1/4
=[(3/3-2/3)-(-4.5)]×4
=[1/3+9/2]×4
=29/6 ×4
=58/3
=19又3分1
中學生...要用多d假分數

1.[(+13)÷(-0.5)-(-16)×(+0.5)]÷[(0.75)×(-4)]
＝(-13÷0.5+16×0.5)÷(－0.75×4)
＝（-26+8）÷(-3)
＝(-18)÷(-3)
＝6
2.[+(1-3分之2)-(-12)×(+8分之3)]÷4分之1

＝（1-2/3＋12×3/8）÷1/4
＝（1-2/3＋9/2）×4
＝（1/3＋9/2）×4
＝19又3分之1

[(+13)÷(-0.5)-(-16)×(+0.5)]÷[(0.75)×(-4)]
=[(-26)-(-8)]÷(-3)
=(-18)÷(-3)
=+6

[+(1-3分之2)-(-12)×(+8分之3)]÷4分之1
=[(+3分之1)-(4又2分之1]÷4分之1
=[(+3分之1)+4又2分之1]÷4分之1
=(+4又6分之5)÷4分之1
=+19又3分之1

第一題
[(+13)÷(-0.5)-(-16)×(+0.5)]÷[(0.75)×(-4)]
=[(-10)-8]÷3
=(-18)÷3
=-6

第二題
[+(1-3分之2)-(-12)×(+8分之3)]÷4分之1
=[3分之1)+2分之9)]÷4分之1
=[6分之2+6分之27]÷4分之1
=6分之29×4
=3分之58
=19又3分之1

[(+13)÷(-0.5)-(-16)×(+0.5)]÷[(0.75)×(-4)]
=[ (-26) - (-8) ]÷(-3)
=(-18) ÷ (-3)
= -6

[+(1-3分之2)-(-12)×(+8分之3)]÷4分之1
=[1/3 - (-4 1/2) ] ÷ 1/4
=(2/6 + 27/6) ÷ 1/4
=(29/6) ÷ 1/4
=116/6
=19 1/3