Question

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

Option (1 ) 8x (2) 0 (3) 18y (4) -18y​

Answer 1

Answer:

Given:

First expression :- (4x - 9y)

Second expression :- (4x + 9y)

What to find?

The difference of the expressions (4x + 9y) from (4x - 9y).

How to find?

First arrange the like terms and solve the expressions to find the difference.

Solution:

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

After removing the brackets,

⇒ 4x - 9y - 4x - 9y

After rearranging the like terms,

⇒ 4x - 4x - 9y - 9y

After solving the like terms,

⇒ -18y

∴ So, the answer is -18y i.e., option 4.

Answer 2

$\huge \underline\purple{\mathfrak{♠ \: ANSWER \: ♠}}$

$\implies \tt{(4x−9y)−(4x+y)}$

$\implies\tt{(4x−9y)−1(4x+9y) }$

$\implies \tt{(4x−9y)−4x−9y}$

$\implies \tt{ \cancel{4x}−9y \cancel{−4x}−9y}$

$\implies \tt{−9y−9y}$

$\implies \huge \red \star\sf{ - 18y}$

$\bold{option \: 4) \: - 18y \: is \: the \: answer}$