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BioHazard9064
 one year ago
Help Please
BioHazard9064
 one year ago
Help Please

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BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0A system of equations is shown below: 3x + 7y = 16 9x + 5y = 16 Part A: Create an equivalent system of equations by replacing one equation with the sum of that equation and a multiple of the other. Show the steps to do this. Part B: Show that the equivalent system has the same solution as the original system of equations.

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0@triciaal hey can you help me please

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1so you need to solve by elimination.

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0OK so how do we do that.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1the objective is to pick a variable and make the coefficient equal and opposite so that when you add the equations the sum of that variable is zero as in eliminated. you now have one equation with one variable. solve. use this value in either of the originals to get the value of the other.

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0so wait if this is elimination we would add them

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1i will walk you through this time

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0to get the x then use the x to get the y

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1so to make the coefficients equal and opposite multiply the first eqn by  3

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0ok so that would look something like this 9x+7y=48

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1dw:1440782571063:dw

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0do we subtract 10 with 64?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1no you forgot to multiply the 7y

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1now that you have y substitute in either of the originals and calculate x

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0wait what was our y

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1it is always a good practice to check the solution in the other original because it is very very easy to make arithmetic errors.

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0indeed I make them all the time xD

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1so what was your solution?

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0for what... what I said earlier?

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0oh wait so we were supposed to multiply the 3 *7

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1dw:1440783443270:dw

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0oh yea 9x21y=48

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1dw:1440783530804:dw

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0no wait im supposed to divide sorry

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.03x + 7(4) = 16

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0So we would do +3x

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0isint it multiplication

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1go ahead and +3x if that is easier for you the idea is to isolate the variable terms to one side and the constants to the other then divide by the coefficient of the variable

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0both of them are 4 right?

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0So how would i do this ... Create an equivalent system of equations by replacing one equation with the sum of that equation and a multiple of the other. Show the steps to do this

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1review everything from the beginning

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0ok ... I dont see it

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0like I see what your talking about but I dont see how that is an equivalent system

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0@triciaal sorry to bother you more but I dont understand

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1did you review? we have a multiple of equation 1 because we multiplied by 3 we added this to the 2nd eqn equivalent system created sum means to add

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1show it has the same result the solution works in each of the originals

BioHazard9064
 one year ago
Best ResponseYou've already chosen the best response.0oh yes I did and thanks so much for helping me
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