49.2k views
5 votes
I’m in ninth grade and don’t understand this algebra 1 question -5(3a+b)+(2a-7b)

User Emesday
by
6.9k points

2 Answers

4 votes
13a-13b!/$ ............
User WildBill
by
7.9k points
5 votes

Answer:

-13 a - 12 b

Explanation:

Simplify the following:

-5 (b + 3 a) + 2 a - 7 b

Hint: | Distribute -5 over b + 3 a.

-5 (b + 3 a) = -5 b - 15 a:

-5 b - 15 a + 2 a - 7 b

Hint: | Group like terms in -5 b - 7 b + 2 a - 15 a.

Grouping like terms, -5 b - 7 b + 2 a - 15 a = (-5 b - 7 b) + (-15 a + 2 a):

(-5 b - 7 b) + (-15 a + 2 a)

Hint: | Combine like terms in -5 b - 7 b.

-5 b - 7 b = -12 b:

-12 b + (2 a - 15 a)

Hint: | Combine like terms in 2 a - 15 a.

2 a - 15 a = -13 a:

Answer: -13 a - 12 b

User ContinuousLoad
by
7.5k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories