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In this video I explain how to solve the following problem by posing a first degree equation with one unknown: A tank with a capacity of 1000 liters has two taps and a drain. The first tap fills it in 1 hour, the second takes 20 minutes longer than the previous one and the drain empties it in 53 minutes and 20 seconds. If the tank is empty and the three valves are opened simultaneously, will it fill? If so, in how much time? At the end, I check the equation with the #Casio #Classwiz fx-991LA CW calculator. All #algebra videos → • 2. Algebra Topic: #linearequations → • LINEAR EQUATIONS AND AP PROBLEMS... Content 00:00 Greeting and initial information 05:13 Development of the exercise Checking on the calculator Pay attention to chat messages and farewell Find Casio Classwiz calculators at: ???? PANAMERICANA stores in Colombia → Website: https://www.panamericana.com.co/ ; Instagram: /panamericana ; Facebook: /panamericana ???? CASIO stores in Colombia → https://tiendascasio.titec.co/pages/t... ???? The official Casio Colombia website → https://tiendascasio.titec.co/product... ???? The KOET page → https://www.koetoficial.com/products/... ???? The Julioprofe + Casio Classwiz website → https://casiocalculadora.julioprofe.g... Follow the Casio Calculadoras Colombia accounts: ???? Facebook → /st.casio.calculadoras.colombia ???? Instagram → /st.casio.calculadoras.colombia ???? X → /casiocol_st #julioprofe