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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
Stacey Warren - Expert brainly.com
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im 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?
yes i think so @Jdosio
When 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.