Question

Add together : 5a , -7b , -8b , -b , 6b , +2a , -b , -a.

​

Answer 1

Step-by-step explanation:

=5a+(-7b)+(-8b)+(-b)+6b+(+2a)+(-b)+(-a)

=5a-7b-8b-b+6b+2a-b-a

=5a+2a-a-7b-8b-b+6b-b

=6a-11b

Answer 2

$\LARGE\star\mathfrak{\underline{\underline{\red{answer: }}}}$

$\sf{(5a) + ( - 7b) + ( - 8b) + ( - b) + (6b) + (2a) + ( - b) + ( - a)} \\ \\ \sf{5a + 2a - a - 7b - 8b - b + 6b - b} \\ \\ \underline{ \sf{6a - 11b}}$