Question

3x+3y=6

9x-19y=74

Answer 1

You've got two equations, need to find both variables, so you should preferably use the elimination method to find both values.

let's get rid of the x first and then use it to find y.

To eliminate the x, one way would be to multiply the first equation by -3.

-3(3x +3y =6)
9x -19y = 74
___________________

-9x -9y = -18
9x -19y = 74
__________________ Now add up everything .

Answer 2

0x -(19+9)y = 74-18
-28y = 56
y= 56/-28 (reduce that ofc)

Answer 3

Now use y = -2 into one of the two equations to find x.

3x +3(-2) = 6
3x = 6 + 6
3x = 12
x = 12/3 = 4