How do you solve the system of equations 2x-5y=23 and 3x+7y=-9 by linear combination?
1 Answer
May 30, 2017
1)Multiply the second equation by 2
2)Subtract the first equation to the second equation multiplyed by 3
Explanation:
It's not the smartest method but there we go:
your aim is to add or subtract one equation to the other to delete
That's the process:
1)
2)
3)
now that you have
So the solution is