Question

5 naranjas y tres manzanas cuestan 4180 si 8 naranjas y 9 manzanas valen 6940 calcula el valor de cada manzana y naranja

Answer 1

$5x + 3y = 4180 \\ 8x + 9y = 6940 \\ \\ x = \frac{4180 - 3y}{5} \\ \\ x = \frac{6940 - 9y}{8} \\ \\ \frac{4180 - 3y}{5} = \frac{6940 - 9y}{8} \\ y = 60 \\ \\ x = \frac{4180 - 3 \times 60}{5} \\ x = 800$