Question

Just question number one is good the second one could do if u feel like it​

Answer 1

Answer:

1. n = 2

2. -4 = r

Step-by-step explanation:

-n - 7n = -16

subtract the like terms, like terms are terms that have the same variable or power. Ex: n and 7n are like terms as they both have n, however 7n and 16 are not. x^2 and x are not like terms as they do not have the same power so:

-8n = -16

divide both sides by -8

n = 2

-20 = 3r + 2r

add like terms

-20 = 5r

divide 5 from both sides

-4 = r