Which of the following shows the correct solution steps and solution to 7x – 4 = –18?

A.
7
x
−
4
=
−
1
8
7
x
−
4
+
4
=
−
1
8
+
4
7
x
=
−
2
2
7
x
7
=
−
2
2
7
x
=
−
2
2
7

7x−4
7x−4+4
7x
7
7x

x

=−18
=−18+4
=−22
=
7
−22

=
7
−22



B.
7
x
−
4
=
−
1
8
7
x
−
4
+
4
=
−
1
8
+
4
7
x
=
−
1
4
7
x
−
7
=
−
1
4
−
7
x
=
2

7x−4
7x−4+4
7x
−7
7x

x

=−18
=−18+4
=−14
=
−7
−14

=2


C.
7
x
−
4
=
−
1
8
7
x
−
4
+
4
=
−
1
8
+
4
7
x
=
−
1
4
7
x
7
=
−
1
4
7
x
=
−
2

7x−4
7x−4+4
7x
7
7x

x

=−18
=−18+4
=−14
=
7
−14

=−2


D.
7
x
−
4
=
−
1
8
7
x
−
4
−
4
=
−
1
8
−
4
7
x
=
−
1
4
7
x
7
=
−
1
4
7
x
=
−
2

7x−4
7x−4−4
7x
7
7x

x

=−18
=−18−4
=−14
=
7
−14

=−2