Me with this math problem algebra 2 movie go fastest movie

r+2

Step-by-step explanation:

r²+7r+10 × 3r-30

3 r²-5r-50

=(r+5) (r+2) × 3(r-10)

3 (r-10) (r+5)

=r+2

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!