Answer:
12
Step-by-step explanation:
80-56=24
16/8=2
24/2=12
Answer:
-11/4
Step-by-step explanation:
(-8 - 3)/[3-(-1)]= -11/4
Step-by-step explanation:
8x-11=629
8x=629+11
8x=640
x=80
77/5=99/x
77x=5*99
77x=495
x=495/77
x=6.4
she needs to study 6.4 hrs to get 99