Question

Help on #27 and #31 plz

Answer 1

On number 27 you would do as followed;

       a-6            7
     --------   =  -----   You would turn a-6 into    -6 so it would look like this
        5             12
                                                                                           -6a
                                                                                        ---------
                                                                                            5
     Then you would turn it into a decimal to make it simpler (That's what I do)

                     So   -6a / 5 becomes 1.2 then you would do the same to 7/12
                                         7/12 = .583333333333 but then you would round it to .6 so ....

          1.2a = .6
 then you would divide .6 divided by 1.2 so...     .6 divided by 1.2 = 0.5

         0.5 = 1/2 so  a = 1/2 


  Number 31 is basically the same thing
 
            you turn 5k/10 into 0.5k
            the you turn -12k/9 into -1.3

     So...        .5 divided by -1.3 = -2.6

  -2.6 as a fraction is 2 6/10 as a mixed number