Answer:
5
Explanation:
If you subtract the same thing from both sides, and you are left with 0 = 0, there are infinitely many solutions.
5x + 5 = 5x + ____
Subtract 5x from both sides.
5 = ____
What do you need on the right side, so that when you subtract the same number from both sides you end up with 0 = 0? Answer: 5.
5 = 5
Subtract 5 from both sides.
0 = 0
Let's go back to the original problem, and use a 5 in the blank.
5x + 5 = 5x + 5
Subtract 5x from both sides, and subtract 5 from both sides.
0 = 0
Since 0 = 0 is a true statement, the equation is true for every value of x.
Answer: 5