Mathematics, 23.01.2020 21:31 layah2k00

How to finish this mathematical equation?

9x+3y=420
1x+6y=296
+
10x+9y=716

p. s. i'm not looking for the answer i'm looking for how to finish the equation

Answers: 1

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How to finish this mathematical equation?

9x+3y=420
1x+6y=296
+
10x+...