Solve for X and Y
(i) 37x + 43y = 123 ; 43x + 37y = 117
(ii) 7x - 8y = 11 ; 8x - 7y = 7
(iii) x + 2y = 32 ; 2x + y = 32
(iv) 2x + 3y = 6 ; 3x - 5y2 = 2
(v) x7 + y3 = 5 ; x2 - y9 = 6
(vi) 2x + 3y = 31 ; 17x - 11y = 9
Answers as quick as u can plzz........
(i) 37x + 43y = 123 ----- (i)
43x + 37y = 117 -------(ii)
(i) + (ii),
37x + 43x + 43y + 37y = 123 + 117
80x + 80y = 240
x + y = 3 -------- (3)
(i) - (ii) , gives
37x + 43y - 43x - 37y = 6
-6x + 6y = 6
y - x = 1 ----- (4)
(3) + (4) , gives
x + y + y - x = 1 + 3
2y = 4
y = 2 ,similarly x = 1
Ans: x = 1 and y = 2