7 3/9 x 2,50 :125%......

7 3/9 × 2,50 : 125%
= 66/9 × 250/100 : 125/100
= 66/9 × 250/100 × 100/125
= 22/3 × 5/2 × 4/5
= 440/30 => pec.biasa
= 14 20/30
= 14 2/3 => pec.campuran
= 14,67 => pec.desimal

[tex]7 \frac{3}{9} \times 2.50 \div 12\% \\ \\ \frac{66}{9} \times \frac{25}{10} \times \frac{100}{12} \\ \frac{165000}{1080} \\ 152.77 [/tex]