Answer:

Step-by-step explanation:
Hello!
The HCF or the highest common factor (sometimes also known as the greatest common factor, GCF), is the greatest factor between terms.
First, let's expand both terms:
If we keep them on top of another, we can see that the overlapping variables are
, meaning that the greatest common factor between them is
.
Answer:
It's 90 because we'll make it equal
c = 5n
the cost (c) would equal (=) the number or notebooks (n) times $5 (5) because each is five dollars.
7. 22 / 3 = 7.3333 . basically just rounded it
-3. Put the two equation equal to each other and solve.
4x+18=2x+12
-2x=-2x
2x+18=12
-18=-18
2x=-6
2x/2=-6/2
x=-3