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Write the following as algebraic expressions: In a party decorations total r balloons were used. There were b blue balloons, twice as many green balloons, and the rest of balloons were yellow. How many yellow balloons were used?

Respuesta :

To represent this situation, you will show the number of green balloons in terms of b, the number of blue balloons.

Subtract the sum of the number of blue balloons and green balloons from the total to find the number of yellow balloons.

r - (b + 2b) = y
r - 3b = y
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