Answer:
12x = 0
Explanation:
Let's first find x:
5 = 5 + 2x
Subtract 5 from both sides. Since both sides are equal, subtracting the same from each side will still leave both sides equal.
5 = 5 + 2x
5 - 5 = 5 + 2x - 5
Since 5-5 = 0:
0 = 5 + 2x - 5
0 = 5 - 5 + 2x
Again, 5-5 = 0:
0 = 0 + 2x
0 = 2x
Dividing both sides by 2:
0/2 = 2x / 2
0 = x
x = 0
As we can see, x = 0.
Thus, 12x must also be 0:
12x
Putting in x = 0:
12 * 0 = 0
Answer: 12x = 0