Subtract :-
4x-9y from the sum of 3x + 4y and 9x-7y pls it's urgent for my sister​

8x + 6y

Explanation:

Given the following algebraic expression;

4x - 9y equation 1

3x + 4y equation 2

9x - 7y equation 3

First of all, we would sum up eqn 2 & 3;

(3x + 4y + 9x - 7y)

Collecting like terms, we have;

3x + 9x + 4y - 7y = 12x - 3y equation 4

Next, we would subtract eqn 1 from eqn 4;

12x - 3y - (4x - 9y) =

12x - 3y - 4x + 9y =

12x - 4x - 3y + 9y =

8x + 6y

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