Question

(a) Solve for x and y: 27x – 31y = 66;

31x – 27y = 50​

Answer 1

Answer:

x = -1

y = -3

Step-by-step explanation:

First of all solve eq.1 and eq.2 by elimination method and find out value of x then put value of x in 1st eq. and find out value of y.

Answer 2

Answer:

X = -1

y = -3

Step-by-step explanation:

$27x - 31y = 66 \\ \\ 31x - 27y = 50 \\ \\ subtract \: first \: equationfrom \: the \: second \: equation \\ \\ 4 x + 4y = - 16 \\ \\ or \: \: \: x + y = - 4$

X + Y = -4

$adding \: the \: given \: equations \: we \: get \\ \\ 58x - 58y = 116 \\ \\ x - y = 2$

X - Y = 2

ON SOLVING WE GET

X = -1 AND Y = -3