SOLUTION: ?Please help me?
Solve the system by substitution.
x + y = 12
y = 2x
Algebra.Com
Question 84500: ?Please help me?
Solve the system by substitution.
x + y = 12
y = 2x
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Solve by substition:
Substitute this value of y into the first equation and solve for x.
Combine like-terms.
Divide both sides by 3.
Now substitute this value of x into the second equation and solve for y.
The solution is: (4, 8)
You can also see this when you graph these two linear equations.
The solution is the point of intersection of the two lines.
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