Question

G - (-31)= -7 awnser thus

Answer 1

G - (-31) = -7
G + 31 = -7
G = -7 - 31
G = -38

In short, Your Answer would be -38

Hope this helps!

Answer 2

$g - (-31)=-7\\ g--31=-7\\ g+31=-7\\ g=-38$
So g = -38.