4/5 of 30
a)24
b)8
c)30 4/5
d)20
pl !

4/5 of 30 literally means: 4/5 * 30/1
120/5, now simplify. = 24
so it's 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!