1 = - (-w+6)

a. - 3

b. - 7

c. 7

d. 3

1 = - (-w + 6)

First, simplify brackets. / Your problem should look like: 1 = w - 6

Second, add 6 to both sides. / Your problem should look like: 1 + 6 = w

Third, simplify 1 + 6 to 7. / Your problem should look like: 7 = w

Fourth, switch sides. / Your problem should look like: w = 7

Answer: w = 7 (C)