Question

Six added 3 times to a number is equal to 4 less then 5 times the number what is the number

A. 5
B. -10
C. 10
D. -5

Answer 1

A. 5

Explanation:

Let n = number

(3n)+6 = 5n-4

Subtract 3n from each side

(3n)-3n+6 = 5n-3n-4

6 = 2n-4

Add 4 to each side

6+4 = 2n -4+4

10 = 2n

Divide by 2

10/2 = 2n/2

5 =n