(24:3×6+9×4:3+15×2):10+9:9= (8×6+36:3+30):10+1= (48+12+30):10+1= 90:10+1=10 (100-28):9×(12:6+5)= 72:9+(6+5)= 8+11=19 (15+5×5):10+(7×5-30:6)= (15+25):10+(35-5)= 40:10+30= 4+30=34 ♡Coroana?♡

(24:3×6+9×4:3+15×2):10+9:9= (8×6+9×4:3+30):10+1= (48+36:3+30):10+1= (48+12+30):10+1= (60+30):10+1= 90:10+1= 9+1=10 (100-28):9×(12:6+5)= 72:9×(2+5)= 72:9×7= 8×7= 56 (15+5×5):10+(7×5-30:6)= (15+25):10+(35-5)= 40:10+30= 4+30= 34 Fie n numărul [(n:5)×2]:4+5=9 [(n:5)×2]:4=9-5 [(n:5)×2]:4=4 (n:5)×2=4×4 (n:5)×2=16 n:5=16:2 n:5=8 n=8×5 n=40