Question

Daca in numar il micsoram cu 20 , diferenta o micsoram de 3 ori iar catul il marin cu 80 obținem 90 . Care este numărul .

Answer 1

(a-20):3+80=90                                                                                                       (a-20):3=90-80=10, a-20=10x3, a-20=30 a=30+20 a=50                                                                                                                           V:(50-20):3+80=90 30:3+80=90 10+80=90                                                                                              

Answer 2

[(a-20):3]+80=90
(a-20):3=90-80
a-20=10x3
a=30+20
a=50