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)

dhdhth

step-by-step explanation:

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐