Question

there are 27 red or blue marbles in the bag the number of red marbles is five less than three times the number of the blue marbleshow many red marbles are in the bag and how many blue marbles are in the bag

Answer 1

so assuming that the total =27
r+b=27
r=-5+3b
r=3b-5
subsitute 3b-5 for r in first equation
3b-5+b=27
4b-5=27
add 5
4b=32
divide by 4
b=8
subsitute
b+r=27
8+r=27
subtracct 8
r=19

red=19
blue=8