If a = -3n + 2, and b = 5n - 7, what is the value of a + b, in simplest form?

2n + 9
-8n - 5
-3n
2n - 5

if a = -3n + 2 and b = 5n - 7, what is the value of a - b, in simplest form?

No option

Step-by-step explanation:

A = -3n + 2, and B = 5n - 7

: A + B

= (-3n + 2) - (5n - 7)

= -3n + 2 - 5n + 7

= -8n + 9

an altitude of 15,000 feet

step-by-step explanation:

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.