Question

Помогите решить 1. 0,55 : 11/13+3 2. log5 (24-7x)=log5 3

Answer 1

1)
0,55:11/13+3=11/20*13/11+3=1/20*13+3=13/20+3
=3,65

2)
log₅(24-7x)=log₅(3)
24-7x=3
-7x=3-24
-7x=-21
x=3

Answer 2

1. 0,55 : 11/13+3 = 0,55 : (11/13+3) = 0,55 : (20/13) = 0,55 x 13/20 = 0,3575

2. log5 (24-7x) = log5 3
24-7x = 5^log5 3
24-7x = 3
-7x = -21
x = 3

Ответ: x = 3.