SOLUTION: Solve the system by substitution. x + y = 12 y = 2x

Algebra ->  Algebra  -> Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Solve the system by substitution. x + y = 12 y = 2x      Log On

Ad: You enter your algebra equation or inequality - Algebrator solves it step-by-step while providing clear explanations. Free on-line demo .
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

   

Question 61563: Solve the system by substitution. x + y = 12
y = 2x
Answer by asha(30) About Me  (Show Source):
You can put this solution on YOUR website!
x+y =12 eqn,1
y =2x eqn.2
plugging the value of y in eqn.1 we get
x +2x =12
3x =12
x =12/3 =4
y =2x =2*4 =8
the answer is x=4 and y=8
good luck !!!