\text{Eight times the difference of 5 and a number.}
Eight times the difference of 5 and a number.

8*( 5/x)

Step-by-step explanation:

Since you don’t know the value of the number just put X. It tells you to multiply by eight so you put eight in front, then in parentheses put the number you know, the difference means divide so you put your division symbol and then ask for your unknown variable.

false

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 -