posted by Adraen
How do I do substitution equations
out of the equations in the system, pick the one that has the least amount of funky numbers. then make that equation equal to either x or y(or any other variable dependin on what kind of systems youre doing, usually just x and y in algebra 1). Then plug that equation into the other one and solve.
then change first equation
plug it in
simplify and solve
then substitute the y value back into one of the equations and you have your answer for x.
P.S. algebra is really annoying...I'm in 9th grade Algebra2/trig....not that hard but really annoying...