Question

which of the following is solution of the equation x+y=7 1)(2.9). 2)2-9). 3)(-2.9). 4)(-2-9)​ iska ans​

Answer 1

Answer:

so (-2, 9) is a solution of X + Y = 7

Explanation:

given equation is X + Y = 7

2+9=11 (2.9) is not a solution

2+(-9)= -7 (2. -9) is not a solution

-2+9= 7 (-2.9) is a solution

-2-9=-11 (-2, -9) is not a solution

so (-2, 9) is a solution of X + Y = 7