resuelve aplicando los pasos de solución

Respuesta:
Explicación paso a paso:
((5)/(6)+(3)/(8))*((4)/(3)-(3)/(5)) = 319/360
((4)/(7)*(21)/(6))+((6)/(8)-(4)/(18)) = 91/36
(6)/(8)+(5)/(4))*((5)/(3)+(7)/(10)) = 71/15
((6)/(4)+(2)/(5))*((4)/(6)-(2)/(4)) = 19/60