Question

Evaluate: 5(n-6) , for n=4

Answer 1

Step-by-step explanation:

9×5

9×5 n

9×5 n −5

9×5 n −5 n

9×5 n −5 n ×2

9×5 n −5 n ×2 2

9×5 n −5 n ×2 2 5

9×5 n −5 n ×2 2 5 n+3

9×5 n −5 n ×2 2 5 n+3 −6×5

9×5 n −5 n ×2 2 5 n+3 −6×5 n+1 = 5 n (3 2 −2 2 )5 n (5 3 −6×5) = 9−4125−30 = 595 =19