Question

[(3+a:2):11+7]:5-9=41 Va rog!

Answer 1

foloseste metoda mersului invers : adica treci termenii din membrul stang in membrul drept pana obtii necunoscuta ,......SIMPLU ! :) <3

Answer 2

[(3+a:2):11+7]:5-9=41                                        [(3+a:2):11+7]:5=41+9

[(3+a:2):11+7]:5=50                                           (3+a:2):11+7=50x5

(3+a:2):11+7=250                                              (3+a:2):11=250-7

(3+a:2):11=243                                                  3+a:2=243x11

3+a:2=2673                                                       a:2=2673-3

a:2=2670                                                            a=2670x2

a=5340