Question

Solve the following pair of linear equation using elimination method.
5x-4y+8=0
7x-6y-9=0

Answer 1

hi friend,
5x-4y+8=0____________________(1)
7x-6y-9=0____________________(2)
mbs by 7 in equation (1)
mbs by 5 in equation (2)
then equation (1) change to 35x-28y+56=0_________(3)
and equation (2) change to 35x-30y+45 =0_________(4)
subtract equation 4 from 3
we get 2y+11=0
y=-11/2
put value of y in eq 1 5x=-30 and x=-6
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