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anonymous
 one year ago
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5x+7y=31
2x+4y=16
Which of the following systems could be used to solve the given system of equations by the addition method?
10x + 14y = 31 and 10x  20y = 16
10x + 14y = 62 and 10x + 20y = 32
10x  14y = 62 and 10x + 20y = 80
anonymous
 one year ago
I will fan and medal! 5x+7y=31 2x+4y=16 Which of the following systems could be used to solve the given system of equations by the addition method? 10x + 14y = 31 and 10x  20y = 16 10x + 14y = 62 and 10x + 20y = 32 10x  14y = 62 and 10x + 20y = 80

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0im not quite sure what your asking, do you mean which of the bottom system of equations give you the same value as the top system of equations?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes i think so @Jdosio

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0When you solve a system of equations with the addition method, you want the sign you are getting rid of to be opposite on top and bottom. So for example, 5x and 5x. So we can get rid of one of the choices immediately.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay, we can get rid of the 2nd one @LegendarySadist

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yep. Now look at the other two. See which one of them has a mistake in how it was solved.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Im not sure how to figure that out @LegendarySadist

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I'm having a hard time trying to figure out how to explain it as well /:

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh well thank you for your help anyways! @LegendarySadist

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sorry I couldn't be of more help. As a hint, look at the first choice's numbers after the = sign.

radar
 one year ago
Best ResponseYou've already chosen the best response.0A bigger hint: Look closely at the last one.

radar
 one year ago
Best ResponseYou've already chosen the best response.0What do you get when you add them?
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