For full credit, show all work to support your answers. Solve each equation.
1. x+9=-15
2. 11x=121
I
3. 30 = 8n - 2
-9-X=12
4.
3
Can anyone help me and put the explanation please and thank you

Ok
So to solve number 1 spur x as the subject.

1) x + 9 = - 15
x = - 15 — 9
x = - 24

To know if it is correct you can say;

- 24 + 9 = - 15

Because you got back - 15 then it is correct.

2) 11x = 121

Again we are gonna make x the subject.

11x = 121
x = 121/11
x = 11

If you should do the opposite of division and multiply 11 by 11 you should get 121.

3) 30 = 8n — 2

Make n the subject

30 = 8n — 2
30 + 2 / 8 = n
4 = n

I’ll add the rest of the solutions in the comments. :) Hope this helps

40 & 50 in the right corner are the complementary angles as when placed in a sum (added together) they make 90°