Mathematics, 04.07.2019 13:20 rebekah052482

There was some gas in the tank. i added 13.3 gallons to it. after that, there was 21 gallons. how many gallons were in the tank at the start?

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There was some gas in the tank. i added 13.3 gallons to it. after that, there was 21 gallons. how ma...