posted by kathy on .
find the values of x and y that solve te following system of equations
first one times 9 ---> 27x + 18y = - 198
2nd one times 2 ---> 10x - 18y = 50
add them : 37x = -148
x = -4
I will let you finish it.
Multiply (1) by 9 and (2) by 2 to get the y's to cancel
Add (3) and (4) together
Divide both sides by 37
Substitute that in either original equation (1) or (2) to solve for y. Check to make sure it works for the other equation, as well.