Question

Help with 4 questions please

Answer 1

Answer:

Step-by-step explanation:

-1+x/3= -7

-3+x=-21. Multiply both sides by 3

X=-21 + 3

X= -18

Answer 2

17) x=－18
19) x=7
21) x=7
23) n=8
The answer are definitely correct. I'm not gonna trick you.

Hope I can help you!