Question

afla termenul necunoscut din următoarea egalitate [(13+12•m)•10-330]:100=13

Answer 1

[(13+12*m)*10-330]:100=13
[13+12*m)*10-330]=13*100
(13+12*m)*10-330=1300
(13+12*m)*10=1300+330
(13+12*m)*10=1630
13+12*m=1630:10
13+12*m=163
12*m=163-13
12*m=150
m=150:12
m=12,5