Question

7/22=28/3x+4 поможіть​

Answer 1

Ответ:

$\frac{7}{22} = \frac{28}{3x + 4} \\ 22 \times 28 = 7(3x + 4) \\ 22 \times 28 = 21x + 28 \\22х28-28=21х</p><p>\\ 21 \times 28= 21x \\ \frac{21 \times 28}{21} = x \\ x = 28$