Question

Simplify the following
(i) 3x – ( 4y + 5x + 2y ) -5z
(ii) –x + [3y – 4x –{ x – 2x } +3y]

Answer 1

3x – (4y + 5x + 2y) -5z

= 3x - (4y - 5x - 2y) - 5z

= 3x - 4y - 5x - 2y - 5z

= -2x - 6y - 5z

–x + [3y – 4x – { x – 2x } +3y]

= -x + [3y - 4x - x + 2x + 3y]

= -x + 3y - 4x - x + 2x + 3y

= -4x + 6y

Answer 2

Given,

$(i)3x-(4y+5x+2y)-5z\\(ii)-x+[3y-4x-(x-2x)+3y]$

W have to simplify the these given expressions

Here, we have to using BODMAS rule to simplify,

Here, we are only using subtraction and addition

Now,

Take first one

$(i)$ $3x-(4y+5x+2y)-5z$

$= 3x-4y-5x-2y-5z$

$= -2x-6y-5z$

$= -(2x+6y+5z)$

$(ii)$ $-x+[3y-4x-(x-2x)+3y]$

$=-x+3y-4x-x+2x+3y$

$= -4x+6y$

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

Therefore, the answers are $-(2x+6y+5z)$ and $2(-2x+3y)$.