1.

By solving a pair of linear equation x+y=8and 2y-x=1 the value of x and y

Answer»

Answer:

LET 2y−x=8...(1)

and 3x−y=1...(2)

MULTIPLY (1) by 3, we get

⇒−3x+6y=24...(3)

Subtract (2) by (3), we get

⇒5y=25

⇒y=525=5

Sustitute the VALUE of y=5 in (2)

⇒3x−5=1

⇒3x=6

⇒x=36=2 


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