Let m the tens digit and n the ones
the Original number is 10m+n
7(m+n) =10m+n
7m+7n=10m+n
6n=3m
Reversing the number 10n+m
10n+m=18+n+m
9n=18
n=2
6n=3m
6(2)=3m
3m=12
m=4
the number is 10m+n=10(4)+2=42
Answer:
Where is the model ?
Step-by-step explanation:
The points for C is (12, 10.5)
Answer:
7 1/2 hours I believe is the correct answer. Hope it works!
