[tex]\[\text{Let the coins be: }\begin{cases}7 \text{ coins of } 0.54 \text{ pesos (54 centavos)}, \\ 3 \text{ coins of } 2.54 \text{ pesos}. \end{cases}\] \[\text{Total value } = 7 \times 0.54 + 3 \times 2.54\][/tex] This will render as:[tex]\text{Let the coins be: }\begin{cases}7\text{ coins of } 0.54 \text{ pesos (54 centavos)}, \\ 3 \text{ coins of } 2.54 \text{ pesos}. \end{cases}[/tex][tex]\text{Total value } = 7 \times 0.54 + 3 \times 2.54[/tex]