Question

.....8x+13x=121........СРОЧНО!!!

Answer 1

$8x + 13x = 121 \\ 21x = 121 \\ x = 121 \div 21 \\ x = \frac{121}{21} = 5 \times \frac{16}{21.}$
Ответ : х = 5 16/21.

Удачи))))

Answer 2

8х+13х=121
21х=121
х=121/21
х=5 16/21
Ответ:5 16/21