Question

(12,42:(2/7/10×4)+4,1)×0,8-3,8 (28-11×0,1-16,9)×4/25 это иди пример

Answer 1

(12,42:(2,7/10*4)+4,1)*0,8-3,8/(28-11*0,1-16,9)*4/25 =
(12,42:(0,27*4)+4,1)*0,8-3,8/(28-1,1-16,9)*4/25 =
(12,42:1,08+4,1)*0,8-3,8/10*4/25 =
(11,5+4,1)*0,8-0,38*4/25 = 15.6*0,8-1,52/25 = 12,48 - 0,0608 = 12,4192
Как-то так.