Question

Simplify 3x +7y - [2x + 2y- { x – y - (x + 3y ) } ]​

Answer 1

Answer:

$3x + 7y - (2x + 2y - (x - y - (x + 3y)))$

$3x + 7y - (2x + 2y - (x - y - x - 3y))$

$3x + 7y - (2x + 2y - ( - 4y))$

$3x + 7y - (2x + 2y + 4y)$

$3x + 7y - (2x + 6y)$

$3x + 7y - 2x - 6y$

$x + y$

Ans. x + y

Hope it helps.