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stabiliti valoarea de adevar a urmatoarelor afirmatii 64÷4=128÷8 (1600÷8)÷4=320÷(8×4) [(900÷3)÷3]:5=600÷4 8000÷[(80:4):5]=144:12 1440÷5÷4÷3=1440÷(5×4×3) 512÷16÷4=512÷4÷16​