Solve: 3x

+ 4 = 5x - 4x - 8

The answer is 3x=-18

3x = - 18

Step-by-step explanation:

1. Simplify this equation in terms of what is already provided:

3x + 4 = 5x - 4x - 8 ⇒ 3x + 4 = x - 8

2. Now subtract 3x from either side, at the same time adding 8 to either side: 3x + 4 = x - 8 ⇒ 4 = - 2x - 8 ⇒ 12 = - 2x

3. Divide - 2 on either side to isolate the x, and recieve it's value:

12 = - 2x ⇒ x = 12/-2 ⇒ x = - 6

4. The question demads for the value of 3x, so simply multiply the known value of x by 3, as such: x = - 6 ⇒ 3x = - 6 * 3 = - 18