Prove this equation [duplicate]

5 + 5 + 5 = 550

By one stroke of a pen, prove the above equation. Use your imagination !

Hint: Can be solved better on a piece of paper.

• Please edit the title into the puzzle – humn Jan 8 '18 at 10:11

Draw a 45 degree line and turn the + to a 4.
$5 +5+5 = 550$ becomes $545 + 5 = 550$

• Nice one, I hadn't thought of that! – Phylyp Jan 8 '18 at 10:05

Easy one !

5+5+5 ≠ 550 is valid

One solution is:

5 + 5 + 5 ≤ 550

Another solution is:

5 + 5 + 5 ≠ 550