Răspuns :
Explicație pas cu pas:
succes!!!!!¡!!!!!!!!!!
[tex]4 \times \frac{1}{5 } \times 2 \frac{1}{2} \div \frac{3}{4} [/tex]
[tex] \frac{21}{5} \times \frac{5}{2} \div \frac{3}{4} = \frac{21}{2} \div \frac{3}{4} = \frac{21}{2} \div \frac{4}{3} = \frac{14}{1} [/tex]