Evaluate the expression when `x=7/9` by converting the fractions to decimals.

`x+0.31+(-x)`

Now evaluate the expression when `x=7/9` by using the commutative property of addition to add opposites first.

`x+(-x)+0.31`

Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity

Box 2: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity