Factoring Example: find the GCF of 20,50,120 Just find the factors of each number The factors of 20 are 1,2,4,5,10,20 The factors of 50 are 1,2,5,10,25,50 The factors of 120 are 1,2,3,4,5,6,8,10,12,15,20,24,30,40,60,120 the common factors of 20,50,120 are 1,2,5,10 just the numbers common to all three. the greatest common factor of 20,50,120 is 10
since both classes used 4 busses we can use elimination by subtracting the A class Equation from the b class equation to solve from v for its value Then, use either equation and the now found value for v to solve for b.
You should find part of the process to be
12v+4b-(8v+4b)=12-16 which shows the van holds only a few people even before continuing the solution.