Solve for and when you have a value for , substitute that value into either of the original equations and solve for .
Elimination Method
Multiply equation 1 by 5 and equation 2 by -2:
Eq. 1a:
Eq. 2a:
Add the two equations:
Eq. 1a + Eq. 2a:
Solve for and when you have a value for , substitute that value into either of the original equations and solve for .
Substitution and Elimination are two ways to do it. Since the coordinates of the ordered pair in the solution set are integers, you could also do this one by graphing. And then there is always Cramer's Rule...
