Answer:
The correct option is (A)
Explanation:
First add (12x + 9y) + (-2y).
After opening the brackets \left (+\times- \right ) is - we get;
12x + 9y - 2y
Subtract like terms 9y - 2y, we get;
12x + 7y
Now subtract (4x - 3y) from (12x + 7y). Write the equation as follows:
(12x + 7y) - (4x - 3y)
Open the brackets \left (-\times- \right ) is +
12x + 7y - 4x + 3y
Put like terms together:
= 12x - 4x + 7y + 3y
= 8x + 10y
Therefore, correct option is (A)