How do you solve #x-5y=10#, #-2x+10y=-20#?
1 Answer
Nov 27, 2015
Explanation:
Multiply the first equation by
However, when we add these, we get
This means that the lines are the same line, so the answer is
If we look at the graphs:
graph{x-5y=10 [-10, 10, -5, 5]}
graph{-2x+10y=-20 [-10, 10, -5, 5]}