Find the equivalent ratios of blue marbles to total marbles. Select all that apply. 4 to 7
4 to 8
2 to 3
8 to 14

There are 8 blue marbles and 6 red marbles. 8:14 blue marbles to total marbles

8 to 14 is the answer

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!