The sum of twice a number and 18 less than the number is the same as the difference between - 10 and the number. What is the number?

n=-14

Step-by-step explanation:

2n+18-n=-10-n

n+18=-10-n

+n + n

2n+18=-10

-18 - 18

2n=-28

/2 / 2

n=-14

number is n = 2

Step-by-step explanation:

Let the number be n

According to the information given in the question we have following relation

Twice the number is 2n

18 less the number mean n - 18

Sum of two relation is equal to difference btween - 10 and number n. therefore we have

2n + (n-18) = - 10 - n solving above equation for n we have

4n = 8

n = 2