O P Malhotra, S K Gupta and, Anubhuti Gangal Solutions for Chapter: Algebraic Expressions, Exercise 5: Exercise

Remove brackets and simplify if possible, by collecting like terms: $8+(a-2)$

Remove brackets and simplify if possible, by collecting like terms:
$5+2(a-2)$

Remove brackets and simplify if possible, by collecting like terms:
$3m-2\left(m+3\right)+4(m-1)$

Remove brackets and simplify if possible, by collecting like terms:
$a\left(a-b\right)-b(b-a)$

Remove brackets and simplify if possible, by collecting like terms:
$2x-\{7-3\left(x+10\right)+x\}$

Remove brackets and simplify if possible, by collecting like terms:
$\left(b^2+c^2\right)-[b^2-b\left(b+c\right)+c^2]$

Remove brackets and simplify if possible, by collecting like terms:
$n[15-n\left(2n+5\right)\left(n-3\right)+n\left\{-15-7n\left(n-4\right)\right\}+18]$

$5a-3\left[3a-\left(4-7a\right)\right]+4(a-3)$ on simplification is equal to