Question

Решите уравнение
X:12=35:5

2x/7 = 10/2,5

(7x-1) : 15=48:6


Помогите умоляю❤️❤️

Answer 1

X:12=35:5

5x = 35*12

x = 35*12 / 5

x = 7*12

x = 84

2x/7 = 10/2,5

2.5*2x = 10*7

5x = 70

x = 70 / 5

x = 14

(7x-1) : 15=48:6

6 * (7x - 1) = 15 * 48

42x - 6 = 15*48

42x - 6 = 720

42x = 720 + 6

42x = 726

x = 726 / 42 = 363 / 21 = 121 / 7

x = 17 целых 2/7