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

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

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

tkhunny
 one year 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
 one year 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
 one year ago
Best ResponseYou've already chosen the best response.0solve for one of the variables?

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

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

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

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

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