I NEED HELP I GOTTA GET THIS DONE, Also i would really apprieciate if you gave me the work

-9

Step-by-step explanation:

C + D

C - D

= 8/11 + 10/11

- - - - - - - - - -

8/11 - 10/11

=18/11

- - - - -

- 2/11

=18/11 x 11/-2

= - 9

The answer is -9

Step-by-step explanation:

8/11 + 10/11

8/11 - 10/11

18/11

-2/11

= -9

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!