18/-3-5

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lemjay's profile pic

lemjay | High School Teacher | (Level 3) Senior Educator

Posted on

To simplify this, apply order of operation PEMDAS.

In the given expression, the operations present are divide and subtract.

As per PEMDAS, division should be perform before subtraction.So it becomes:

`18/-3-5`

`=-6-5`

Then, do subtraction. To subtract -6 and 5, which have unlike signs, change the sign of the second number to its opposite. And change the operation from subtract to add.

`=-6+(-5)`

`=-11`

Therefore,  `18/-3-5 = -11` .

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agnetthomas's profile pic

agnetthomas | Student, Grade 12 | eNotes Newbie

Posted on

You can also apply the BODMAS rule.According to it,

  1. Division should be performed first,that is 18/-3 which gives you -6.
  2. Then,proceed to to the next operation which is subtraction,that is
    -6-5 .As both are negative,add them both and put negative sign,which means -(6+5)=-11

  3. Hence,the final answer is -11.
aishukul's profile pic

aishukul | Student, Grade 10 | (Level 3) Honors

Posted on

To solve 18/-3 -5, first you should divide the fraction by the rule of PEMDAS:

`18/-3`

`=-6.`

Then you subtract:

`-6-5 `

`=-11.`

-11 is the final answer.

atyourservice's profile pic

atyourservice | Student, Grade 11 | (Level 3) Valedictorian

Posted on

18/-3-5

 just in case you mean `(18)/(-3-5)` I'll do that one for you.
 
The first thing you must do is solve the denominator:
-3 - 5 = -8
therefore the problem is:
 
`(18)/(-8)`
which is equal to:
 
 
` (18)/(-8) = -2.25`
 

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