For this equation first you should add +11 on both sides and the add -4/7w so you will have:
3/7w- 4/7w = 11 ⇒ -1/7w = 11 ⇒ w = 11* -7 = -77 so the answer is:
w = -77 :)))
i hope tis is helpful
have a nice day
Equation 1 would be: 3a+2C
Equation 2 would be: 5a+3C
Answer: Third option.
Please, see the detailed solution in the attache file.
Thanks