Question

Help please how do you solve
A numbers one digit is 2 more than twice its tens digit. The sum of its digits are 5. What the number?

Answer 1

let the number be nm, where n is the tens digit, and m is the ones digit

Answer 2

\[m>2n\]\[m+n=5\]

Answer 3

Ok thanks

Answer 4

solve the second equation for m and plug into the first equation,

Answer 5

How do you do that

Answer 6

find and inequality for n,

remember that n,m are digits, so they must be natural numbers ,

deduce n, , then find m with the second equation,

i have found two solutions

Answer 7

to solve the second equation for m
m+n=5
take n from both sides
m=5-n

Answer 8

I'm sorry I don't really get it

Answer 9

how can i help ?