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December 22, 2014

December 22, 2014

Posted by **jasmine20** on Thursday, February 8, 2007 at 11:38pm.

Directions: Solve the system by substitution.

x + y = 12

y = 2x

this is what i did:

in the first equation i substituted y for what i have in the second equation so now it looks like this:

x +2x = 12

3x = 12

x = 4

now i substitute my x into the first equation to look like this:

4 + y = 12

y = 8

so the answer is for variable x its 4

for variable y is 8

right!

thank you.

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