8._ 7+x+66=90
x=90-73
x=17
Answer:
43 1/12
Step-by-step explanation:
Add them together
First we have to have equal denominators
6 3/4 can also be 6 9/12
36 1/3 can also be 36 4/12
We add them to get 42 13/12
12/12 is 1 so we add 1 to 42 and get 43 1/12
Hope this helps
I’m just gone do number 1 for you cuz i’m too lazy to do them all
let’s hope that makes sense