log с основой одна вторая (5x - 7) = - 3

Question

log с основой одна вторая (5x - 7) = - 3

Answer 1

log1/2(5x-7) = -3
1/2^-3 = 5x-7
8 = 5x-7
-5x = -7-8
-5x = -15
x = 3