Question

Eight less than 1/3 a number n is -13

Answer 1

Answer:  The required value of n is -15.

Step-by-step explanation:  Given that eight less than one-third of a number n is -13.

We are to find the value of n.

According to the given information, the equation for n can be written and solved as follows :

$\dfrac{1}{3}\times n-8=-13\\\\\\\Rightarrow \dfrac{n-24}{3}=-13\\\\\Rightarrow n-24=-13\times3\\\\\Rightarrow n-24=-39\\\\\Rightarrow n=-39+24\\\\\Rightarrow n=-15$

Thus, the required value of n is -15.

Answer 2

1/3n - 8 = -13 <== ur equation
1/3n = -13 + 8
1/3n = - 5
n = -5 * 3
n = -15

check..
1/3(-15) - 8 = -13
-5 - 8 = -13
-13 = -13 (correct)

so the number (n) = -15