Question

To solve the equation r+6=6, what should u do:

subtract 0 from both sides.

add 6 to both sides.

subtract 6 from both sides.

add twelve to both sides.

Answer 1

Subtract 6 from both sides.

Answer 2

If you subtract 0 from both sides, nothing happens.
If add six to both sides, you get r+12 = 12
If you subtract both sides by 6, you get r = 12
If you add 12 to both sides, you get r+18 = 18

You choose which is correct. :P