Respuesta :

Answer:

r=8

Step-by-step explanation:

In the beginning you have to think about -3 x what = 6. It's -2. How can we get  -2 from 6, we minus 8, so r = 8.

That also works in all the other equations if you want to try that out.

tramserran

Answer:  a) r = 8          B) step two

Step-by-step explanation:

Step 1: -3(6 - r) = 6

Step 2: -18 + 3r = 6      This is where they made the error (-3 × -r = +3r)!

Step 3:         3r  = 24

Step 4:           r  =  8