Question

Substitution method.....

Answer 1

answer =  

4x +y = 1 --------eq [1]

7x - 2y = 8 -------eq[2]

from eq[1]

y= 1- 4x -----eq[3]

Now , substitute eq[3] in [2]

7x-2[1-4x]= 8

7x - 2 + 8x = 8

7x+8x= 8+2

15x= 10

x= 10 \ 15

x= 2\3

now, substitute the value of x in any eq . we will get the answer , here i am using eq[3]

y = 1-4x

y= 1 - 4 X 2\3

y= 1- 8\3

3-8\3 = y

y= -5\3

THE REQUIRED VALUE OF X AND Y IS 2\3 AND -5\3 RESPECTIVELY .

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