4+ -7 1/2

need asap -10 points-

the answer should be -31.5

Step-by-step explanation:add 4 and -71 and the answer divide it by 2

It is -3 1/2

Step-by-step explanation

First, Try to forget about the 1/2 (we'll use it later)

Now, The way i did it is by doing 7-4 (I got 3)

Lastly, put the negative sign back on the 3 and put the 1/2

      There YoU go

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}