Question

Raul tried to evaluate an expression step by step.

=
=
=
​

3−(−5)−7
3+5−7
3+2
5
​

Step 1
Step 2
Step 3
​

Answer 1

3−(−5)−7
3 + 5 -7 = 8 - 7 or 3 -2 = 1

Answer 2

3+5−7
3+(-2)

or, using the usual left-to-right ordering,
3+5−7
8-7