Question

Find a number 1/4th of which is 18 less than the number.

Answer 1

Step-by-step explanation:

Let n = the unknown number.

If "18 less than 7 times the number is 108," then we can translate this English statement mathematically into the following equation:

7n - 18 = 108

7n - 18 + 18 = 108 + 18

7n + 0 = 126

7n = 126

(7n)/7 = 126/7

(7/7)n = 18

(1)n = 18

n = 18

CHECK:

7n - 18 = 108

7(18) - 18 = 108

126 - 18 = 108

108 = 108

Therefore, n = 18 is our desired, correct number.