Question

If the first equation is multiplied by 3 and then the equations are added, the result is _____.

3x + y = 3

x - 3y = -2

Answer 1

10x-6y-11

Explanation:

3(3x+y) = 3(3) +×-3y=-2

9x + 3y = 9 + x -3y =-2

9x+x = -3y-3y =-2-9

10x = -6y =-11

10x-6y-11