Question

Simplify the expression. Hint: Order of Operations, then Combine Like Terms.

3(−2a+8b)−(9b−a).

Answer 1

`\\ \sf\bull\longmapsto 3(-2a+8b)-(9b-a)`

`\\ \sf\bull\longmapsto -6a+24b-9b+a`

`\\ \sf\bull\longmapsto -6a+a+24b-9b`

`\\ \sf\bull\longmapsto -5a+15b`

`\\ \sf\bull\longmapsto 15b-5a`

Answer 2

Take out of parentathese
(3*2a)+(3*8b)-9b-a
6a+24b-9b-a
Combine like terms
(6a-a)+(24b-9b)
Answer:
5a+15b