## College Algebra (10th Edition)

In order to verify that the order pair is a solution, we substitute the values of all 3 variables into all equations to ensure that they produce a true result: $$3(2) + 3(-2) + 2(2)=4 \\ 4=4$$ For equation two: $$2-3(-2)+2 =10 \\ 10=10$$ For equation three: $$5(2)-2(-2)-3(2)=8 \\8=8$$ All equations are true, so the solution is correct.