Question

187 – {19 x [(11 x 9 – 294 :6) : 25 + 4] : n} - 53 = 20
​

Answer 1

Răspuns:n=313,5

Explicație pas cu pas:

187-{19×[(11×9-294:6):25+4]:n}-53=20/+53

187-{19×[(11×9-294:6):25+4]n}=73/-4

187-{19×[(11×9-294:6):25]n}=69/×25

187-{19×[11×9-294:6)]n}=1725/×6

187-{19×[11×9-294)]}=10350/+294

187-{19×[11×9)]}=10644/:9

187-{19×[11)]}=1182,6/:11

187-{19[)]}=107,5/+19

187-=126.5/+187

N=313,5