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say andrew has a bag containing an unknown number of counters. he reaches in and removes 5 counters


label Mathematics
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schedule 1 Day
account_balance_wallet $5

say andrew has a bag containng an unknown number of counters. he reaches in and removes 5conters.

Nov 20th, 2017

Let C be the total number of counters, since you don't know what he started with.

Let X be the total number of counters remaining, because you are already missing a variable and this is how many remain.

For this example the equation would be C-5=X


Oct 11th, 2014

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