Question

are this calculations correct? 65-32=34 and 47+39=86.Show how you could check this using the inverse.

Answer 1

STEP 1: Stick a "y" in for the "f(x)" guy:STEP 2: Switch the x and y. ( because every (x, y) has a (y, x) partner! ):STEP 3: Solve for y:STEP 4: Stick in the inverse notation, continue. 1 2 3.
these are the steps and that is not correct 

Answer 2

To check 65-32=34 you have to add because the inverse operation of subtraction is addition so add 34+32=56
so the answer is wrong
To check the second problem u have to subtract and then do the same as the first question