everytime I try to ask for hwlp my teacher goes and helps other st8dents when I am tryin to ask him for help on a problem.

Question

How do I solve the system of equation?
x+y=1
2x-y=5

Answer 1

x+y=1
2x-y=5

In this case add the two equations together

x+y+2x-y=1+5

and you see that the y-y=0 so the y terms disappear

x+2x=1+5

add the like terms together

3x=6

so x=2

Answer 2

x+y=1
2x-y=5

x = 1 - y

Substitute 1 - y for x in the second equation and solve for y. Put that value in the first equation to find x. Check by putting both values into the second equation.

I hope this helps. Thanks for asking.