Question

Ques: -20. 2n-7x5n-4 = 1250. Find the value of 'n'.​

Answer 1

Answer:

n = -38

Step-by-step explanation:

2n - 7×5n - 4 = 1250

Apply BODMAS rule here

◾First we solve brackets ((), {}, [])

◾Then we solve (powers and roots etc.)

◾ then division, multiplication, addition and subtraction from left to right.

Multiply.....

2n - 35n - 4 = 1250

Shifting "4" to right side

-33n = 1250 +4

-33n = 1254

On solving

$n = - \frac{1254}{33} \\ \\ n = - 38$

Here ,

we obtain n = -38