Question

From the sum of 4 + 3x and 5 – 4x + 2x , subtract the sum of 3x – 5x and –x + 2x + 5.

Answer 1

EXPLANATION

First of all, we need to find the sum of

( 4 + 3x) + ( 5 - 4x + 2x ) and ( 3x - 5x) +

( - x + 2x + 5) , so

= ( 4 + 3x ) + ( 5 - 4x + 2x)

= ( 4 + 3x ) + ( 5 - 2x)

= 4 + 3x + 5 - 2x

= 9 + x

= ( 3x - 5x ) + ( - x + 2x + 5 )

= ( 3x - 5x ) + ( x + 5 )

= - 2x + x + 5

= - x + 5

Now, we have to subtract

(-x + 5) - ( 9 + x )

= ( - x + 5 ) - ( 9 + x )

= - x + 5 - 9 - x

= 2x - 4

Hence, the answer is (2x - 4)

( Hope it will help u )