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calculeaza folosind adunarea repetata 6×14,5×20,4×20,5×16,4×23,6×12

Răspuns :

Explicație pas cu pas:

6×14=14+14+14+14+14+14=84

5×20=20+20+20+20+20=100

4×20=20+20+20+20=80

5×16=80

4×23=23+23+23+23=92

6×12=12+12+12+12+12+12=72