from tkinter import *
root = Tk()
root.resizable(0,0)
root.geometry("500x400")
root.title("Calculadora de proporção")
def limpar1():
entrada1.delete(0, END)
entrada2.delete(0, END)
entrada3.delete(0, END)
def app():
a = variavel1.get()
b = variavel2.get()
c = variavel3.get()
valor = (c * b) / a
valorarr = round(valor,2)
vresultado2.set(valorarr)
a =Label(root, text="Calculadora de proporção", font=(
"Helvetica", 18, "bold"), fg="blue")
a.place(relx=0.2,rely=0.05)
variavel1 = IntVar()
variavel2 = IntVar()
variavel3= IntVar()
entrada1 = Label(text="Entrada 1",justify='center',
fg="green",font=("Arial","13","bold"))
entrada1.place(relx=0.1,rely=0.25)
entrada1 = Entry(textvariable=variavel1,justify='center',fg="blue")
entrada1.place(relx=0.05,rely=0.35)
entrada2 = Label(text="Entrada 2",justify='center',
fg="green",font=("Arial","13","bold"))
entrada2.place(relx=0.45,rely=0.25)
entrada2 = Entry(textvariable=variavel2,justify='center',fg="blue")
entrada2.place(relx=0.4,rely=0.35)
entrada3 = Label(text="Entrada 3",justify='center',
fg="green",font=("Arial","13","bold"))
entrada3.place(relx=0.75,rely=0.25)
entrada3 = Entry(textvariable=variavel3,justify='center',fg="blue")
entrada3.place(relx=0.7,rely=0.35)
#
bt_calcular1 = Button( text="Resultado", bd=2, bg='#107db2',
fg='white',
font=('verdana', 14, 'bold'),command=app)
bt_calcular1.place(relx=0.25,rely=0.5, relwidth=0.25, relheight=0.1)
butlimpar1 = Button( text="Limpar", bd=2,
bg='#107db2', fg='white',
font=('verdana', 14, 'bold'),command=limpar1)
butlimpar1.place(relx=0.6, rely=0.5, relwidth=0.25, relheight=0.1)
Textoresultado2=Label( text="Valor do X:"
,font=("Arial","14","bold"))
Textoresultado2.place(relx=0.2,rely=0.7)
vresultado2 = StringVar()
resultado2=Label( textvariable=vresultado2
,font=("Arial","14","bold"))
resultado2.place(relx=0.45,rely=0.7)
root.mainloop()