Question

samikaran x + y =4 samikaran 5 x + 12 y=7 define velue of x or y?​

Answer 1

Answer:

I think answer is; X= 41/7

Y = -23/7

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Answer 2

Answer: PLEASE BRAINLIEST MY ANSWER

∴ x = 31/7 ; y = -13/7

Step-by-step explanation:

Q) Equation x + y =4 equation 5 x + 12 y=7 define value of x or y?​

⇒ Given equations -

x + y = 4  ------------1)

5x + 12y = 7  -------2)

multiply equation 1) by 5

5(x + y = 4)

∴ 5x + 5y = 20 ------3)

subtract equation 3) from 2)

                     5x + 12y = 7

-                     5x +  5y = 20

                 -____-_____-____

                     0   + 7y  = - 13

                              y   =  -13/7

put in equation 1)

x + (-13/7) = 4

7*(7x - 13) = 4

7x - 13 = 4*7

7x - 13 = 28

7x = 28 + 13

7x = 31

x = 31/7

∴ x = 31/7 ; y = -13/7