Question

olve the folowing simul taneous equatons.

2x-7y=5, 3x+y= 4​

Answer 1

Answer:

2x-7y=5 _______(i)

3x+y=4 _______(ii)

multiplying eqn (ii) by 7

21x+7y=28 ______(iii)

Adding eqn (i) and (iii) we get

2x-7y=5

21x+7y=28

23x=33

x=33/23

putting the value of x in eqn (i) we get

2×33/23-7y=5

66/23-7y=5

-7y=5-66/23

-7y=115-66

23

y= -49/23×7

y= -7/23

x=33/23 and y=-7/23