Plz math related questions 4 of them
1. x-3y when x=-4 and y=9
2. a-|b| if a=-7.6 and b=-8.9
3. 3(8x-y) if x=-4 and y=9
4. 9c divided by d if c=2 and and d=1/3

Simple...

you have:

1.) x-3y  when x=-4 and y=9 

-->>> (plug it in)

-4-3(9)

-4-27

-31

2.) a-|b|  when a=-7.6 and b=-8.9

-->>>(plug it in)

-7.6-|-8.9|

-16.5

3.) 3(8x-y) when x=-4 and y=9

-->>(plug it in)

3(8(-4)-9)

3(-32-9)

3(-41)

-123

4.)

when c=2 and d=





54

Thus, your answer.