Three identical circular coins are lined up in a row as shown (the 10s represent their value, not a length). The distance betwee
n the first and third coins is 3.2 cm. What is the diameter of one of these coins?
1 answer:
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For this case we have the following expression:
For simplicity we follow the steps:
We apply distributive property to the terms within the parenthesis, bearing in mind that:
We add similar terms taking into account that equal signs are added and the same sign is placed, while different signs are subtracted and the sign of the major is placed.
ANswer: