Answer:
im not sure but i got 30.1
Step-by-step explanation:

This answers would be 12x
Answer:
9 is the number
Step-by-step explanation:
Let's call this number x
The equation is:
30+2x=48
subtract 30 from both sides and you get
2x=18
divide 2 from both sides and you get
x=9
Therefore, 30+2(9)=48
She regrouped the numbers instead of multiplying like 8b(2b-r) -4r(2b-r).