Algebra-1

To solve the given system of equations using the elimination method, we can add the two equations to eliminate the variable "y". Let's perform the addition:

(x - y) + (2x + y) = 11 + 19

Simplifying the equation, we have:

x + 2x - y + y = 30

Combining like terms, we have:

3x = 30

To solve for x, we divide both sides of the equation by 3:

3x / 3 = 30 / 3

x = 10

Now that we have found the value of x, we c...