Homework Help: algebra

Posted by mayra on Wednesday, February 11, 2009 at 5:18pm.

my question is this how do you solve this equation?
x=3y-1
x+2y=9
solve each system of equation by the substitution method.

algebra - drwls, Wednesday, February 11, 2009 at 7:21pm
Substitute 3y -1 for x in the second equation, and solve the resulting equation for y

3y -1 + 2y = 9
which leads to
5y = 10
Take it from there
algebra - Melanie, Saturday, October 27, 2012 at 1:43pm
(3y-1) + 2y = 9
5y - 1 = 9
5y = 10
y=2

x=3(2)-1
x=5

(5,2)

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