Question

Please answer all quistion and show your work.

11. 5 + c/9 = -31
12. 8 + x = 20
13. -23 – c = -19

Answer 1

11. 5 + c/9 = -31
Subtract 5 from both sides: c/9 = -36
Multiply both sides by 9: c = -324
Answer: c = -324

12. 8 + x = 20
Subtract 8 from both sides: x = 12
Answer: x = 12

13. -23 - c = -19
Add 23 to both sides: -c = 4
Divide both sides by -1: c = -4
Answer: c = -4

Answer 2

Explanation:

for 11 find the common denominator and combine the fractions so now you have 9x5+c/9=-31, then you do 9x5 and move the c with the 45 then multiply all terms by the same value to eliminate fraction denominators,cancel multiplied terms that are in the denominator then multiply the numbers 9(-31) to get -279 . Subtract 45 from both sides and simplify to get C = -324

for 12 just subtract 8 from both sides and x = 12

13 assuming C is a negative number because - - is + so do positive 23-19 to get 4 and so it’s -4