That depends on what exactly you want to 'do' with it.
If you want to write it in a way that will attract some attention,
a peacock-blue felt-tip marker could work well for you.
If you want to solve it for 'x', you could do it like this:
-9x - 3 = 60
Add 3 to each side:
-9x = 63
Multiply each side by -1 :
9x = -63
Divide each side by 9:
x = -7
Chat with our AI personalities
cos60= 1/2 sin60=1.732/2
60 x 60 = 3,600
60 is the square root you are looking for. 60 x 60 = 3600.
x = 10
60 - 20 = 20 + 20=============