Question

If x = 1, y = a is the solution of the equation x + 3y = 10, then find 'a' ________.

(A) a = 9 (B) a = 1 © a = 2 (D) a = 3​

Answer 1

Answer:

(D) a = 3 is your answer hope it will help you.

Answer 2

$x + 3y = 10 \\ 1 + 3a = 10 \\ 3a = 9 \\ { \boxed{a = 3}}$