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Faman39
 4 years ago
Its really hard for me to solve prob workin bakwards. i dnt get these math how to solve, pls teach me how these r can solve, if dnt i wont able to pass math exam, which i i hav to give within few days.
On Monday morning, Colin filled his car with gallons of gas, then used gallons driving. On Tuesday, he used up 2 gallons driving. On Tuesday night, his gas tank had gallons remaining. How much gas was in Colin's tank before he filled up on Monday morning?
Faman39
 4 years ago
Its really hard for me to solve prob workin bakwards. i dnt get these math how to solve, pls teach me how these r can solve, if dnt i wont able to pass math exam, which i i hav to give within few days. On Monday morning, Colin filled his car with gallons of gas, then used gallons driving. On Tuesday, he used up 2 gallons driving. On Tuesday night, his gas tank had gallons remaining. How much gas was in Colin's tank before he filled up on Monday morning?

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0another copy and paste fail

Faman39
 4 years ago
Best ResponseYou've already chosen the best response.2sorry ! i will do it now correctly

Faman39
 4 years ago
Best ResponseYou've already chosen the best response.2On Monday morning, Colin filled his car with 6 1/2 gallons of gas, then used 3 1/4 gallons driving. On Tuesday, he used up 2 gallons driving. On Tuesday night, his gas tank had 4 1/4 gallons remaining. How much gas was in Colin's tank before he filled up on Monday morning?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i am going to guess 3

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0lets say he started with "x" gallons of gas, then added 6 1/2 so now he has \[x+6\tfrac{1}{2}\] gallons in the car he then uses \[5\tfrac{1}{4}\] so he has \[x+6\tfrac{1}{2}5\tfrac{1}{4}\] in the car

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0and you know that this is equal to \[4\tfrac{1}{4}\] so put \[x+6\tfrac{1}{2}5\tfrac{1}{4}=4\tfrac{1}{4}\]and solve for x

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[x+6\tfrac{1}{2}=4\tfrac{1}{4}+5\tfrac{1}{4}=9\tfrac{1}{2}\] \[x=9\tfrac{1}{2}6\tfrac{1}{2}=3\]
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