Name: Joe
Who is asking: Student
Question: x+2y=3 its substitution method i am having alot of trouble figuring it out. send the answer as soon as possible. thank you Hi Joe, I see two reasonable choices here.
Solve the first equation for y. thus 3x + y 3x = 11  3x or y = 11  3x
Substitute into the second equation. thus x + 2(11  3x) = 3 x + 22  6x = 3 5x = 25 Thus x = 5 Finally substitute x = 5 into either of the equations you started with to find y. Now try it the other way. Solve the second equation for x and substitute into the first equation. You should find the same answer. Cheers,Penny
