Question

Find the solution of the system of equations.
2x+3y= -4
x + 9y = 13

Answer 1

(-5,2)

Explanation:

Using elimination:

Multiply x+9y=13 by -2 which would equal -2x-18y=-26

Then you add the two question together

2x+3y=-4 + -2x-18y=-26

Since 2x-2x=0, you can cross them out

3y+(-18y)= -15y

-4+-26 =-30

You are now left with -15y=-30

Then you divide both by -15

Your answer is y=2, now you need to find x by plugging y into one of the equations

x+9(2)=13

x+18=13

Subtract 18 from both sides

x=-5

(sorry if this is confusing or too long)