-2-(+7) is the same thing at -2-7 which is -9

is the same thing as

which is

or

Last but not least the last one is the Associative Property based on definition listed below :)
Associative Property:<span> When three or more numbers are added, the sum is the same regardless of the grouping of the addends. For example (2 + 3) + 4 = 2 + (3 + 4)</span>
Answer
Find out the how much money was in the account after
years.
To prove
Formula

As given
Tracy deposited $59 into a bank account that earned 3.5% simple interest each year.
Principle = $59
Rate = 3.5 %

i.e

Time = 1.5 years
Put all the values in the equation

= \frac{309.75}{100}[/tex]
= $3.1(approx)
Amount in the account = Principle + Simple interest
= $59 + $ 3.1
= $ 62.1
1 Dollar = 100 cent
Now convert $62.1 into cent.
= 62.1 × 100
= 6210 cent
Therefore the money in the account is 6210 cent .