Question

( 7 x-y=5-0 )
( 21 x-3 y=k-2 )
( Rightarrow i n quad 2 )
( 2 x-3 y=k )
take 3 common
( 3(7 k-y)=k )
now trom
( 3(5)=k )
( 15=k )

# Determine the value of k for which the following system of equations becomes consistent : 7x -y=5,21x - 3y=k.

Solution