Question

If A = -5x + 3y, B = 5x – 3y, find (3A + B) – (3A - B)
solution​

Answer 1

-3ax+xb+12ay-4yb

Step-by-step explanation:

(3ax-xb+3ay-yb)-(6ax-2xb-9ay+3yb)

3ax-xb+3ay-yb-6ax+2xb+9ay-3yb -3ax+xb+12ay-4yb

Answer 2

A=-5x +3y

B= 5x-3y

(3A+5B) - ( 3A-B)

{3(-5x+3y) +5(5x -3y)} - {3( -5x+3y) -(5x-3y)}

{-15x +9y +25x -15y} - {-15x +9y -5x + 3y}

{10x -6y} -{ -20x +12y}

10x-6y+20x - 12y

30x -18y