Question

How do I do these problems?

Answer 1

So, We Have Two Problems To Solve:

(-3)÷((-1/3) ÷ (8-4)) ÷ (-12/5)
And
(-1/3)*2÷(7/3 * (-1))÷(-6/5)

So, Lets Do The First One:

We Know That We Need To Use Order Of Operations.
We Need To First Do:
8-4. 
8 - 4 = 4.
So, We Have Now:

(-3)÷((-1/3) ÷ 4) ÷ (-12/5)
So, We Need To Now Convert 4 To An Improper Fraction.
This Becomes 4/1.
Now, We Can Divide (-1/3) By 4.
Dividing Is The Same As Multiplying By The Reciprocal. 
So:
-1     1     -1
--- * --- = ---
 3     4     12
So, We Now Have:

(-3)÷ (-1/12) ÷ (-12/5)
So:
 3    12    36
--- * --- = ---  = -36
 1    -1    -1
So, We Now Have:

-36 ÷ (-12/5)

So:
-36     -5     -180
----- * ----  = ------
  1      12       12

So, We Now Only Have Left to Divide:
-180 ÷ 12 = -15.

So, The Value Of The First Question Is -15.

Now For Number Two:


(-1/3)*2÷(7/3 * (-1))÷(-6/5)

So, We Use Order Of Operations. 

7/3 * (-1) = -7/3

Next:

(-1/3)*2÷(-7/3)÷(-6/5)

Now, We Must Do:

-1/3 * 2.
(-1/3) * 2 = (-2/3)
So, Now We Have:

(-2/3) ÷ (-7/3) ÷ (-6/5)

Now, Begin Division.
-2      3     -6         6
---  * --- = ---- =   ----
 3     -7    -21       21
So:
6/21 ÷(-6/5)

Do The Final Division:

 6      5       30
--- *  ---   = ---- 
21    -6     -126

Simplify:

  30  ÷ 6      5
------    =    -----
-126 ÷ 6    -21

So, Number Two Has A Value Of 5/-21.