Question

a pair of linear equation X + Y is equals to 9 x minus Y is equal to 1 find X and Y​

Answer 1

x+y = 9x - y = 1

1) x + y = 1

x = 1 - y

2) 9x - y = 1

9(1-y) - y = 1

9 - 9y - y = 1

-9y = 1 - 9

y = -8 ÷ -9

y = $\huge\frac{8}{9}$

hence x = 1 - (8/9)

x = $\huge\frac{1}{9}$