Question

Is this sum correct? please answer yes or no surely and if it is no then please solve this sum correctly step by step.Thanks.

Answer 1

$\underline{\large{\text{Answer}}} :$

$\text{4b - \{ ( 3b - 12 ) - ( 12b - 17 ) \}}$

$\text{= 4b - \{ 3b - 12 - 12b + 17 \}}$

$\text{= 4b - \{ ( 3 - 12 ) b + ( - 12 + 17 ) \}}$

$\text{= 4b - \{ - 9b + 5 \}}$

$\text{= 4b - ( - 9b ) - ( 5 )}$

$\text{= 4b + 9b - 5}$

$\text{= ( 4 + 9 ) b - 5}$

$\text{= 13b - 5}$


$\text{NOTE :}$

$\text{Your answer is correct but check the 4th line of}$
$\text{your answer, please. It will be (- 9b + 5) but}$
$\text{you wrote as (9b + 5). Rest is all good.}$

#$\underline{\bold{MarkAsBrainliest}}$