Question

if
${7}^{x - 1} + {7}^{x + 1 } = \frac{50}{7}$
then find x
​

Answer 1

Answer:

Step-by-step explanation:

(7^(- 1) + 7) 7^x = 50/7

(1 / 7 + 7) 7^x = 50×7^(- 1)

(50 /7) 7^x = 50×7^(- 1)

7^x / 7 = 7^(- 1)

7^(x - 1) = 7^(- 1)

x - 1 = - 1

x = 0.