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

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

answer: 1722

step-by-step explanation:

given: the mass of saturn=

the mass of mercury=

the number of times the mass of saturn is greater than the mass of mercury

hence, the mass of saturn is 1722 times greater than the mass of mercury.