SOLUTION: whats the solution to solve the system of equations by the substitution method y=2x+1, 3y-3x=9 Solutions is?
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Question 769459: whats the solution to solve the system of equations by the substitution method y=2x+1, 3y-3x=9 Solutions is? Answer by Cromlix(4381) (Show Source):
You can put this solution on YOUR website! y = 2x + 1....1
3y - 3x = 9....2
Substitute y = 2x + 1
into (2)
3(2x + 1) - 3x = 9
6x + 3 - 3x = 9
3x = 9 - 3
3x = 6
x = 2
Substitute x = 2
into equation (2)
3y - 3x = 9
3y -3(2)= 9
3y - 6 = 9
3y = 9 + 6
3y = 15
y = 5
x = 2, y = 5
Hope this helps.
:-)
