Question

Solve this system of linear equations. separate the x- and y-values with a comma.

-2X=8-6Y
-15X=21-6Y

Answer 1

1) Make x the subject in the first equation (solve for x in the first equation)
2) Now that you have x in terms of y, substitute x in equation 2
3) Now you will have an equation with only y, solve for y
4) Once you have y, go back to the first equation with x in terms of y, substitute the y obtained from third step and solve for x

Answer 2

I KNOW HOW TO SOLVE IT ITS JUST WHEN I SOLVE IT I SOME HOW GET THE WRONG ANSWER