Determine which equation below has a solution of b = 3.
a.
2b + 3b – 6 = –21
b.
–8 = 3 + 4b – 8 – 5b
c.
–2 = 2 + 5b – 2 – 6b
d.
–4b + 3b – 6 = –4

Option B

Step-by-step explanation:

-8 = 3 + 4b - 8 - 5b

-8 + 8 = 3 + 4b - 8 - 5b + 8 (add 8 on both sides)

0 = 3 + 4b - 5b (simplify)

3 + 4b - 5b= 0 (switch sides)

3 - b= 0 (4b - 5b)

3 - b - 3 = 0 - 3 (subtract 3 from both sides)

- b = - 3 (simplify)

(divide both sides by -1)

b = 3 (simplify)

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.