Question

What would be the best method to solve the system of equations below?
6x+3y=21
2x−3y=−13

Answer 1

Elimination

Explanation:

+3y and -3y are opposites so they can cancel out. This would give you 8x=8 so now you know x=1. now substitute the 1 into an equation:

6(1)+3y=21

6+3y=21

3y=15

y=5

x=1