Andy is one-fourth as old as his grandfather, who is 76 yeas old. write an equation to determine whether andy is 19 or 22 years old

Iwould like to think so. what’s the question you need with?

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!