Question

@satellite73
Solve the system of equations by addition
3x + 6y = -15
4x - 6y = -6

Answer 1

could have sworn i just answered this one
add in a column, get
\[7x=-21\] solve for x in one step, what do you get?

Answer 2

oops! I meant to put in
x + 2y = 1
5x + 4y = -7

Answer 3

multiply the first one by -2 all the way across, get
\[-2x-4y=1\\
5x+4y=-7\] then add in a column and the y terms drop out

Answer 4

let me know when you get
\[3x=-6\]

Answer 5

(-3,2)