Question

Can somebody tell me what this is please ?​

Answer 1

Answer: n = -25

Explanation:

(3/5)n + 15 = 10 + (2/5)n [transpose like terms to each side of the equal sign]

(3/5)n - (2/5)n = 10 -15 [simplify]

(1/5)n = -5 [multiply both sides by 5]

n = - 25