Question

решите уравнение (x-4):3,5=2/7:5

Answer 1

(х – 4) : 3,5 = 2/7 : 5
(х – 4) × 5 = 2/7 × 3,5
5х – 20 = 2/7 × 7/2
5х – 20 = 1
5х = 1 + 20
5х = 21
х = 21/5 = 4 1/5

Answer 2

(х-4):3,5=2/7:5
х-4=2/35*35/10
х=2/10+4
х=4 целых2/10=4 целых1/5