Asked by mike
the difference of two numbers is 7. the larger number is 9 less than 3 times the smaller. find the numbers
Answers
Answered by
PsyDAG
a = b + 7
a = 3b - 9
Substitute b + 7 for a in the second equation and solve for b. With that value in the first equation, find a. To check, put both values into the second equation.
a = 3b - 9
Substitute b + 7 for a in the second equation and solve for b. With that value in the first equation, find a. To check, put both values into the second equation.