solve 2x-3y=6 and x+y=1 by substitution method
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2x - 3y =6 - - - (1)
X+y=1-------(2)
From 2
X =1 +y - - - (3)
Substitute for X the in 1
2(1+y)-3y=6
2+2y-3y=6
-y=4y
Y= - 4
Substitute y in eq (3)
We get x = - 3
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