Perdi un quinto de mi dinero y preste un octavo ¿q parte de mi dinero me quedo?

<img src="https://tex.z-dn.net/?f=Hola~~Jhonny%20%5C%5C%20%20%5C%5C%20%20Vamos~pensar~que~yo~tengo~un~total~de~100%5C%25~de~dinero%5C%5C%20%20%5C%5C%20%5Cunderbrace%7BUn~quinto~de~mi~dinero%28100%5C%25%29%7D_%7B%20%5Cfrac%7B1%7D%7B5%7D%20%7D%20%5C%5C%20%20%5Cfrac%7B1%7D%7B5%7D.100%5C%25%3D20%5C%25~~~---%5C%20%5Ctextgreater%20%5C%20quiere~decir~que%3A%20%5C%5C%20%20%5Cboxed%7B%5Cfrac%7B1%7D%7B5%7D%3D20%5C%25%20%20%7D---%5C%20%5Ctextgreater%20%5C%20Lo~que~perdi.%20%5C%5C%20%20%5C%5C%20%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%20%5C%5C%20" />

<img src="https://tex.z-dn.net/?f=%5Cunderbrace%7BPreste~un~octavo%7D_%7B%20%5Cfrac%7B1%7D%7B8%7D%20%7D~%5Cunderbrace%7Bde%7D_%7BX%7D~%5Cunderbrace%7Bmi~dinero%28100%5C%25%29%7D_%7B100%5C%25%7D%20%5C%5C%20%20entonces%3A%20%5C%5C%20%20%5Cfrac%7B1%7D%7B8%7D.%28100%5C%25%29%3D12%2C5%5C%25%20~~~---%5C%20%5Ctextgreater%20%5C%20quiere~decir~que%3A%20%5C%5C%20%20%5C%5C%20%20%5Cboxed%7B%5Cfrac%7B1%7D%7B8%7D%3D12%2C5%5C%25%20%7D---%5C%20%5Ctextgreater%20%5C%20lo~que~preste%20%5C%5C%20%20%5C%5C%20%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%20%5C%5C%20Primero~vamos~sumar~lo~que~perdi~mas~lo~que~preste%3A%20%5C%5C%20%20%5C%5C%20%5Cunderbrace%7BDinero~que~perdi%7D_%7B20%5C%25%7D~~%5Cunderbrace%7Bmas%7D_%7B%2B%7D~~%5Cunderbrace%7Bdinero~que~preste%7D_%7B12%2C5%5C%25%7D%20%5C%5C%20%20%5C%5C%20%5Cboxed%7B20%5C%25%2B12%2C5%5C%25%3D%5Cboxed%7B32%2C5%5C%25%7D%7D" />

<img src="https://tex.z-dn.net/?f=%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%2A%20%5C%5C%20Ahora~para~saber~cu%5Cacute%7Ba%7Dnto~me~qued%5Cacute%7Bo%7D%2C%20es~solo~restar~el~100%5C%25~vea%3A%20%5C%5C%20%20%5C%5C%20%5Cboxed%7B100%5C%25-32%2C5%5C%25%3D%5Cboxed%7B67%2C5%5C%25%7D~--%5C%20%5Ctextgreater%20%5C%20lo~que~me~queda%7D%20%5C%5C%20%20%5C%5C%20Ahora~pasamos~67%2C5%5C%25~a~fracci%5Cacute%7Bo%7Dn~vea%3A%20%5C%5C%20%20%5C%5C%2067%2C5%5C%25%3D%20%5Cfrac%7B67%2C5%7D%7B100%7D%20%3D%20%5Cfrac%7B675%7D%7B1000%7D%3D%20%5Cboxed%7B%5Cboxed%7B%5Cfrac%7B27%7D%7B40%7D%20%20%7D%7D--%5C%20%5Ctextgreater%20%5C%20el~dinero~que~me~qued%5Cacute%7Bo%7D" /> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Espero te sirva, saludos!