Which of the following problems can be represented by the equation below? 5x - 15 = 15x

6

Step-by-step explanation:

5x-15=15x

    +15  +15

5x=30

5/5=1

30/5=6

1=6 or x=6

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

they are simplified

step-by-step explanation: