What is the greatest common factor of 100 and 26

2.

The factors of 100 are:
1, 2, 5, 10, 25, 50, 100

The factors of 26 are:
1, 2, 13, 26

The only one they share is 2. 

Factors of 100: 1 2 4 5 10 25 50 100
Factors of 26: 1 2 13 26
2 is the the greatest common factor of 100 and 26

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!