A. 5n B. ? C. 2n-1

D. ? E. N-3 F. N+2

Expression pyramid I don’t know how to get d and b

the square root of what number? if you add that, then someone will probably answer the question.

answer is 12345678900987654321234567890987654321

step-by-step explanation:

b

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -