Question

(1,8+x)-21=71,4 помогите срочно!!!​

Answer 1

(1, 8 + x) - 21 = 71, 4

x - 19, 2 = 71, 4

x - 19, 2 = 71, 4

x - 19, 2 + 19, 2 = 71, 4 + 19, 2

x-19,2+19,271,4+19,2

x = 90,6

ответ:x = 90,6