Guys help me here please I will mark you as brainliest.

a. Answer is -2
Proof:-
8+x= -10
→ x= -10+8
→ x = -2
b. Answer is 8
Proof:-
-12 + x = -4
x = -4+12
x = 8
c. Answer is -30
Proof:-
24 + x = -6
x = -6 - 24
x = -30
d. Answer is 17
Proof:-
-9 + x = 8
x = 8+9
x = 17
e. Answer is -21
Proof:-
21 + x = 0
x = -21
a. Answer is 13
Proof:-
9 - x = -4
- x = - 4 - 9
- x = - 13
x = 13
b. Answer is -19
Proof:-
-12 - x = 7
-x = 7+12
-x = 19
x = -19
c. Answer is -4
Proof:-
11 - x = 15
-x = 15-11
-x = 4
x = -4
d. Answer is 2
Proof:-
-6 - x = -8
-x = -8+6
-x = -2
x = 2
e. Answer is 35
Proof:-
25 - x = -10
-x = -10-25
-x = -35
x = 35
a. Answer is 7
Proof:-
5 x 7 = 35
b. Answer is 9
Proof:-
6 x 9 = 54
c. Answer is -3
Proof:-
-9 x -3 = 27
d. Answer is 7
Proof:-
-7 x 7 = -49
e. Answer is -7
Proof:-
2 x -7 = -14
4)
a.
8 x (-3) = 24