Choose Yes or No to tell whether the symbol will be reversed when the variable is isolated in each inequality. –10.5 9

–21/5 ≤ –5/2d

No. ≤  means less than or equal to

Step-by-step explanation:

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.

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 -