I'm not sure which numbers you are referring to, but 3 has the same absolute value as -3, and 7 has the same absolute value as -7, just for an example.
Answer:
0.274g/cm^3
Step-by-step explanation:
density = mass / volume
so d = 575.4 / 210
d = 0.274g/cm^3

Not much more to say about this. Just multiply the integer by the coefficient.
Answer:
8/3
Step-by-step explanation:
Subtract 6n and subtract 1
3n = 8
Divide by 3
n = 8/3
Answer:
Given a function f ( x ) \displaystyle f\left(x\right) f(x), a new function g ( x ) = − f ( x ) \displaystyle g\left(x\ right)=-f\left(x\right) g(x)=−f(x) is a vertical reflection