Question

solve the following set of simultaneous equation x + y =24 ; 2 x -y =-6​

Answer 1

Answer:

x = 6, y = 18

Step-by-step explanation:

x + y = 24    -equation 1

2x - y = -6   -equation 2

changing subject of equation 1,

       x = 24 - y

substituting value of x in equation 2,

2*(24 - y) - y = -6

48 - 2y - y = -6

48 - 3y = -6

-3y = -6 - 48

-3y = -54

y = -54/-3

y = 18

so, to find value of x,

x = 24 - y

x = 24 - 18

x = 6