Question

1 + 7 - (-7)
could you clarify how to do this step by step

Answer 1

When you add two negatives, the sum is always positive.

1 + 7 + 7 = ?

Study this site carefully.

http://www.mathsisfun.com/positive-negative-integers.html

Answer 2

1 + 7 - (-7)
1+ 7 = 8
8 - (-7)
convert
8 +(7)
= 15
is
that right? 15

Answer 3

Right.