nwhat the answer to 7x+5y=7 -9x-5y=-19

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1 Answer

????????????? wot quesshun ???????????????

line 1: 7x+5y=7

line 2: -9x -5y =-19

line1 + line2...(7x-9x) +(5y -5y)=7-19

-2x=-12

x=6

from line 2...5y=19-9x=19-54=-35

y=-35/5=-7
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