Answer: -1
Step-by-step explanation: To subtract the integers -8 - (-7), it's important to understand that when we have minus a negative, we can change it to plus a positive. So -8 - (-7) becomes -8 + (+7).
So starting at 0 on our number line, -8 moves us 8 units to the left. Then from there, +7 moves us 7 units back to the right and we end up at -1.
I have attached a number line showing this.
So -8 - (-7) or -8 + (+7) is -1.
