Hello!
So, if I understand this correctly, you are asking what temperature is ten degrees higher than -7°C.
Basically, all you are doing is -7 + 10.
If you add 10 to -7, it cancels out the negative, and makes it positive, because 10 is greater than -7.
Once the -7 is cancelled out, you have 3 remaining. 0 + 3 = 3.
Therefore, the temperature that is 10 degrees higher than -7°C is 3°C.
X=3°C
Hope this helped!
Regards,
KayEmQue