Question

Log2(7x-4)=log2 13 помогите

Answer 1

log2(7x-4)=log2(13), log2(7x-4)=log2(13), x>4/7, 7x-4=13, x=17/7, x>4/7, x=17/7

Answer 2

log2 (7x-4) = log2 (13) => 7x-4 = 13
7x = 13+4
7x = 17
x = 17/7
x = 2 целые 3/7
Ответ: 2 целые 3/7