Question

Afla termenul necunoscut:
[(13+12 x m) x 10-330]:100=13

Answer 1

[(13+12m)10-330]:100=13
(13×10+12m×10-330):100=13
(130+120m-330):100=13
130+120m-330=13×100
130+120m-330=1300
120m=1300-130+330
120m=1500
m=1500:120
m=12,5

(130+120×12,5-330):100=13
(130+1500-330):100=13
(1630-330):100=13
1300:100=13
13=13
SPER CA TE-AM AJUTAT