Răspuns:
[tex]3 \frac{1}{5} \times 8 \frac{3}{4} = \frac{3 \times 5 + 1}{5} \times \frac{8 \times 4 + 3}{4} = \frac{16}{5} ^{4)} \times \frac{35}{4} ^{7)} = \frac{28}{1} [/tex]
[tex]1 \frac{2}{7} \times 1 \frac{13}{15} = \frac{9}{7} {}^{3)} \times \frac{22}{15} {}^{4)} = \frac{12}{5} [/tex]
[tex]5 \frac{5}{8} \times 1 \frac{7}{25} = \frac{45}{8} {}^{9)} \times \frac{32}{25} {}^{4)} = \frac{36}{5} [/tex]
[tex]3 \frac{3}{13} \times 2 \frac{11}{14} = \frac{39 + 3}{13} \times \frac{28 + 11}{14} = \frac{42}{13} {}^{3)} \times \frac{39}{14} {}^{3)} = \frac{9}{1} [/tex]
Sper ca te-am ajutat!
SPOR
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