Two numbers have a sum of 1,212 and a difference of 518. which system of equations could we use to solve this problem? a. x+y=1212 x-y=518 b. 2x+y=1212 y-x=518 c. x=1212-518 y=518 d. x-y=1212 x+y=518

The Answer is A. I'm answering if someone need an explanation.

Step-by-step explanation:

If you read the question carefully you can see that first it says sum, sum is the answer of 2 numbers added like 2 + 2 = 4 so the first line will be

x + y = 1,212

and because only after sum it says difference, difference is an answer of two numbers that were subtracted like 2 - 2 = 0, that means that the second line is

x - y = 518

Answer will be:

x + y = 1,212

x - y = 518

Hope I helped some1)

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step-by-step explanation: