Solving systems using substitution and linear equations?
How would I do then substitution?
- 8 years agoFavorite Answer
first solve for y in the first equation
Now plug in this value of y in the first equation into the second equation
Now plug in this value of x into one of the equations
- FredLv 78 years ago
Solve your 1st eqn for y. y = -1 -2x. Now substitute that value of y into your 2nd eqn.
-1-2x = 3x-16. Solve for x. Now that you have x put that back in either eqn to find y. Cake. :)