find x and y if (2x+y,1)=(x,2x+3y
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(2x+y,1)=(x,2x+3y)
⇒2x+y=x and 2x+3y=1
⇒x+y=0 and 2x+3y=1
2(x+y=0)
⇒2x+2y=0 ----------eq.1
2x+3y=1 ----------eq.2
eq.2 - eq.1
2x+3y=1
2x+2y=0
(-) ___________
1y=1
⇒y=1
substitute y=1 in eq.1
⇒2x+2y=0
⇒2x+2=0
⇒2x=-2
⇒x=-1
⇒2x+y=x and 2x+3y=1
⇒x+y=0 and 2x+3y=1
2(x+y=0)
⇒2x+2y=0 ----------eq.1
2x+3y=1 ----------eq.2
eq.2 - eq.1
2x+3y=1
2x+2y=0
(-) ___________
1y=1
⇒y=1
substitute y=1 in eq.1
⇒2x+2y=0
⇒2x+2=0
⇒2x=-2
⇒x=-1
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