Question

solve the following pair of linear equations x and y by the substitution method 2x - 7y = 1 ; 4x + 3y= 1
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Answer 1

Answer:

hii

2x_ 7y=1 +

4x+3y=1

=6x - 10y=2

Answer 2

Step-by-step explanation:

2x-7y = 1

2x =1+7y

x =(1+7y)/2....................(i)

4x + 3y = 1

4*(1+7y)/2 +3y = 1

2*(1+7y) + 3y = 1

2+14y +3y =1

17y= -1

y = -1/17

now,

put the value of y in equation i

x = (1-7/17)/2

x =( ( 17-7)/17)/2

x =10/7/2

x = 5/7

hence, the value of x=5/7 and y = -1/17.