help me for exam plzzzzzzz
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2x+y=7
put x=1
then 2(1)+y=7
2+y=7
y=7-2=5
put x=2 then
4+y=7
y=3
similary put x=3 then
y= 1
put x=4 then
y=-1
select as brainlist ^_^
put x=1
then 2(1)+y=7
2+y=7
y=7-2=5
put x=2 then
4+y=7
y=3
similary put x=3 then
y= 1
put x=4 then
y=-1
select as brainlist ^_^
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