Question

Find the value of Dx, if 3x - 4y = 7, 5x + 2y = 3


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Answer 1

Answer:

X = 1

y = -1

EXPLANATION :-

3x-4y=7 ..... (1)

5x+2y=3

5x+2y=3 can also be written as , 10x+4y=6(multiplying both the sides by 2) ......(2)

adding (1) and (2) ,

3x-4y+10x+4y= 7+6

=> 13x=13

=> x= 1

Putting the value of one in the equation (1)

3*1 -4y = 7

=> 3-4y=7

=> -4y= 4

=> y = -1

HENCE X=1 AND Y= -1