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efectuati in doua moduri
a)7×3 1/4
b)3 3/2 ×5

repede va rog​


Răspuns :

a)

[tex]7 \times 3 \frac{1}{4} [/tex]

[tex] \frac{7}{1} \times \frac{3}{1} \times \frac{1}{4} [/tex]

[tex] \frac{ 7\times 3 \times 1}{1 \times 1 \times 4} [/tex]

[tex] \frac{21}{4} [/tex]

b)

[tex] \frac{33}{2 \times 5} [/tex]

[tex] \frac{33}{10} [/tex]