a+6b=2 a+3b=-1

a+6b=2 a+3b=-1
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1 Answer

line 1: x+6y=2

line 2: x+3y=-1

line1 - line2...(x-x) +(6y -3y0=3

3y=3

y=1

from line 2...x=-1-3y=-1-3

x=-4
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