-8x – 4y = -68 x + 3y = 16 Solve using the substitution method?
- LC InstructorLv 79 years agoFavorite Answer
If you know -8x – 4y = 16, then you can solve for y in that one equation.
Then divide by -4
then, take that Y amount (-4-2x) and substitute it into this equation:
-68 x + 3y = 16
-68 x + 3(-4-2x) = 16
-68x -12 -6x = 16
-74x -12= 16
-74x = 28
Then solve for X. When you know X, put it back in the y=-4+2x. You'll get Y.