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At Pablo's auto shop, it takes him 12 minutes to do an oil change and 24 minutes to do a tire change. Let x be the number of oil changes he does. Let y be the number of tire changes he does. Using the values and variables given, write an inequality describing how many oil changes and tire changes Pablo can do in less than 3 hours (180 minutes).
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12x+24y=180 is the equation. Try and solve it
Is the answer 13?
nope. You can also simplify the equation by doing 36x=180.
The two equations are basically the same. X and y are basically one. You can do 180/36 which is the opposite of multiplication.
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