1.
Simplify the expression 12
n
+ (-5
n
) + 3
n
.
A.
7
n
B.
-4
n
C.
-20
n
D.
10
n
Hint
2.
Simplify (-16
c
) - (-4
c
).
A.
20
c
B.
-12
c
C.
12
c
D.
-20
c
Hint
3.
Simplify 7
a
+ 3
a
.
A.
10
a
B.
10
aa
C.
4
a
D.
21
a
Hint
4.
Simplify 2
n
+ 6(
n
– 7).
A.
8
n
– 42
B.
15
n
C.
8
n
– 7
D.
n
Hint
5.
Simplify 10
x
– 5 + 4
x
+ 2(
x
– 7).
A.
16
x
– 12
B.
16
x
– 19
C.
16
x
– 2
D.
16
x
– 10
Hint