Answer :
[tex]1=-(-w+6) \ \ \ \ | omiting\ the\ bracket\\\\
1=w-6\ \ \ \ | add\ 6\\\\
w=7\\\\Solution\ is\ D.[/tex]
well you want to distribute the negative sign so it will be a lil easier to solve
so -(-w+6) becomes (w-6)
now plug in each value
a. 3-6 = -3
b. -7-6= -13
c. -3-6= -9
d. 7-6= 1
so -(-w+6) becomes (w-6)
now plug in each value
a. 3-6 = -3
b. -7-6= -13
c. -3-6= -9
d. 7-6= 1