Question

Срочная помощь уравнения

Answer 1

\\\\\\\\\\\\

Answer 2

2^(7-3x)=(1/2)^(x-4)
1/2=2^(-1)
2^(7-3x)=2^(-1*(x-4))
2^(7-3x)=2^(4-x)
7-3x=4-x
4x=3
x=3/4
x=0,75