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:
Step-by-step explanation:
x= -5 or x=2
that's what i think it is.
Answer:
use symolab
Step-by-step explanation:
Answer:
-21
Step-by-step explanation: