Question

Find the sum of x, X-1, x-2 .................. up to 5 terms.​

Answer 1

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Answer 2

Answer:

Sum = 5/2 {2x -3}

Step-by-step explanation:

according to the given data,

a = X, d = -1, n = 5,

substitute these values in the equation,

S = n/2 {2a + (n-1)d}

by solving we get :

S = 5/2 {2x + 4(-1)}