Question

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
​

Answer 1

Take -4 to the other side as a positive number

So that it becomes 7x=-14

Divide both sides by 7

-14/7 is -2

So, x has a values of -2

Answer 2

Simplify 7\times -47×−4 to -28−28.

-28=-18

−28=−18

2 Since -28=-18−28=−18 is false, there is no solution.

No Solution