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overtonka
 2 years ago
Solve each system of equations by substitution
3v3x=15
5v+x=29
overtonka
 2 years ago
Solve each system of equations by substitution 3v3x=15 5v+x=29

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tkhunny
 2 years ago
Best ResponseYou've already chosen the best response.2Divide the first by 3 and something magic may pop out.

skullpatrol
 2 years ago
Best ResponseYou've already chosen the best response.0I tried to teach you this yesterday and you refused to learn?

overtonka
 2 years ago
Best ResponseYou've already chosen the best response.0I did not refuse I just didn't get it

tkhunny
 2 years ago
Best ResponseYou've already chosen the best response.2Well, @overtonka, I think @skullpatrol would be delighted to see you make a better effort, today. Divide the first equation by 3 and show what you get.

tkhunny
 2 years ago
Best ResponseYou've already chosen the best response.2Super! Any suggestion what we should do next? Hint: I didn't have you divide by 3 just for fun.

overtonka
 2 years ago
Best ResponseYou've already chosen the best response.0solve for one of the variables?

skullpatrol
 2 years ago
Best ResponseYou've already chosen the best response.0Now what (hint: use the name of the method)

tkhunny
 2 years ago
Best ResponseYou've already chosen the best response.2Since we are using substitition, that would be the things to do. Please abandon those sillylooking '1's. We don't usually write those unless we are trying to make a point.

tkhunny
 2 years ago
Best ResponseYou've already chosen the best response.2No, why did you UNsolve? Please "solve for one of the variables".

overtonka
 2 years ago
Best ResponseYou've already chosen the best response.0so plug that in to the other equation?

skullpatrol
 2 years ago
Best ResponseYou've already chosen the best response.0Substitution principle: An expression maybe replaced by another expression that has the same value If $$a=b$$then b maybe substituted for a in any expression.

skullpatrol
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1362010398136:dw

tkhunny
 2 years ago
Best ResponseYou've already chosen the best response.2It's your big chance. Let's see the substitution!
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