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Solve each system of equations by substitution
3v+3x=12
3v6x=21
 one year ago
 one year ago
Solve each system of equations by substitution 3v+3x=12 3v6x=21
 one year ago
 one year ago

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tkhunnyBest ResponseYou've already chosen the best response.0
1) Divide EVERYTHING by 3.
 one year ago

skullpatrolBest ResponseYou've already chosen the best response.1
$$3v+3x=12$$ $$3v6x=21$$ $$\frac{1}{3}(3v+3x)=\frac{1}{3}(12)$$ $$ \frac{1}{3} (3v6x)=\frac{1}{3}(21)$$
 one year ago

skullpatrolBest ResponseYou've already chosen the best response.1
Dividing by 3 is the same as multiplying by 1/3 right? @overtonka
 one year ago

overtonkaBest ResponseYou've already chosen the best response.0
I really don't know how to do this o.o
 one year ago

skullpatrolBest ResponseYou've already chosen the best response.1
The multiplication property of equality allows you to multiply both sides of an equation by the same nonzero number and get an equivalent equation. Have you heard of this property in class?
 one year ago

skullpatrolBest ResponseYou've already chosen the best response.1
Let me give you an example let's say 3=3, now I multiply both sides by 2 what would I get?
 one year ago

abc123!Best ResponseYou've already chosen the best response.0
do u want the answer or how to get the answer
 one year ago

ryan123345Best ResponseYou've already chosen the best response.0
To atleast make the question easier divide everything by 3
 one year ago

ryan123345Best ResponseYou've already chosen the best response.0
dw:1361972385891:dw
 one year ago

skullpatrolBest ResponseYou've already chosen the best response.1
@overtonka Does giving you the answer help you learn?
 one year ago

skullpatrolBest ResponseYou've already chosen the best response.1
Do you want to learn how to do this?
 one year ago

ryan123345Best ResponseYou've already chosen the best response.0
dw:1361972609881:dw
 one year ago

ryan123345Best ResponseYou've already chosen the best response.0
dw:1361972653183:dw
 one year ago

skullpatrolBest ResponseYou've already chosen the best response.1
You must first understand why you do the steps @overtonka
 one year ago

ryan123345Best ResponseYou've already chosen the best response.0
dw:1361972684025:dw
 one year ago

skullpatrolBest ResponseYou've already chosen the best response.1
ryan will give you the answer .. I can show you how to do it ...you choose
 one year ago

ryan123345Best ResponseYou've already chosen the best response.0
dw:1361972804662:dw
 one year ago

skullpatrolBest ResponseYou've already chosen the best response.1
Being interested in how and why things work is what math is all about
 one year ago

skullpatrolBest ResponseYou've already chosen the best response.1
Do you want to learn how to do this?
 one year ago

skullpatrolBest ResponseYou've already chosen the best response.1
Why the steps work?
 one year ago

GaLmBest ResponseYou've already chosen the best response.0
Ryan is showing how to do it, he's not just giving answers
 one year ago

skullpatrolBest ResponseYou've already chosen the best response.1
Let the learner decide.
 one year ago

GaLmBest ResponseYou've already chosen the best response.0
ok, @overtonka , do you like the way skullpatrol does it or the way Ryan answers
 one year ago

CallistoBest ResponseYou've already chosen the best response.0
"It is better to guide the user to an answer rather than doing all the work yourself. We discourage giving out answers without letting the asker at least take some part in the analysis  the aim of this site is to teach. Please refer to our code of conduct at http://openstudy.com/codeofconduct for more information. Thank you."
 one year ago
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