Explicație pas cu pas:
c)
[tex] \frac{8}{100} \times \frac{92}{10} = \frac{2}{25} \times \frac{46}{5} = \frac{92}{125} [/tex]
d)
[tex] \frac{105}{100} \times 420 = \frac{21}{20} \times 420 = 21 \times 21 = 441[/tex]
