Question

Who started the problem correctly? The problem form is (-5) - (-1 3/4).

Mariah started the problem as (-5) + 1 - 3/4
Shane started the problem as (-5) + 1 + 3/4

Answer 1

Shane started the problem correctly

Explanation:

We are given problem (-5) - (-1 3/4).

Mariah started the problem as (-5) + 1 - 3/4

Shane started the problem as (-5) + 1 + 3/4

We need to find who started the problem correctly.

The problem should be started by converting the mixed fraction into improper fraction i,e

`-5-(-1(3)/(4))\\=-5-(-1-(3)/(4) )\\=-5-(-(7)/(4))`

Now we will solve bracket by multiplying -1 with term inside the bracket i.e

`=-5+(7)/(4)`

`= (-13)/(4)`

Let's compare both the procedures now:

Mariah:

`(-5) + 1 - (3)/(4)`

`=(-5) - (1)/(4)`

`=(-21)/(4)`

Therefore, Mariah did not start the problem correctly.

Shane:

`(-5) + 1 + (3)/(4)`

`= -5 + (7)/(4)`

`= (-13)/(4)`

Therefore, Shane started the problem correctly.