Question

(7)^1-3х>(49)^х+3 ешиьб неравенсво

Answer 1

7^(1-3x) > 49^(x+3)
7^(1-3x) >7^(2*(x+3))
1-3x > 2(x+3)
1-3x > 2x+6
-5x > 5
x < -1  
x∈( -∞; -1)