4
____
>
3
7
_________>
4
____
>
7
14________
>
4
____
>
11
25
2a
=
____________________
a
=
4
/
____________________
a
=
____________________
3a
+
b
=
____________________
3
(
____________________
)
+
b
=
3
____________________
+
b
=
____________________
____________________
=
3
-
____________________
b
=
-
3
a
+
b
+
c
=
____________________
(
____________________
)
+
(
-
____________________
)
+
c
=
____________________
2
-
3
+
c
=
____________________
-
____________________
+
c
=
____________________
c
=
4
+
____________________
c
=
5
an^2
+
bn
+
c
=
2n^2
-
____________________
+
5
