I still don't know how to directly solve this problem. Can someone guide to solve this system of equation by using the substitution method? Thanks!

1. Y=6x-5
Y=-x+9

3 answers

This was Damon's answer. Which part don't you understand?

"well, we know that both are y so
6x-5 = -x+9
7 x = 14
x = 2
then y = -x+9 = -2+9 = 7 ">""
How did you get 7 & 14?
6x-5 = -x+9

Add x to both sides of the equation

6x + x - 5 = -x + x + 9

7x - 5 = 9

Add 5 to both sides of the equation

7x = 14