What number + (−56)=12
How do I do this?

Missing number = 68

Step-by-step explanation:

You can simply set up an equation like so: .

Then, proceed to solve by isolating the x by itself.

x+(-56)=12

   +56   +56  <--- Do the opposite operation on both sides to cancel the 56.

x=68

A quick pointer: A number plus a negative number is just subtracting so you can just work backwards.

68.

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3