Iam hoping someone could kindly show the step by step instruction to solve this equation. i have tried to solve it many times but it is still not clear, could someone show the steps 2(8r^2+r)-4r

I’d say letter a..

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!