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Krista and Alexa played balloon darts in a school fair. Krista popped 6 balloons, which is 1 balloon less than Alexa. Complete the working equation that represents the number of balloons b, that Alexa popped and solve the equation

b - 1 + _

b = _ balloons

1 answer

To represent the number of balloons \( b \) that Alexa popped, we can start with the information that Krista popped 6 balloons and that this is 1 balloon less than the number Alexa popped.

We can express this relationship with the equation:

\[ b - 1 = 6 \]

Now, to solve for \( b \), we can add 1 to both sides of the equation:

\[ b - 1 + 1 = 6 + 1 \]

Thus, we have:

\[ b = 7 \]

So, Alexa popped 7 balloons.

To fill in the blanks in your working equation:

  1. The equation:

    • \( b - 1 + 1 \)

  2. The completed equation would be:

    • \( b - 1 + 1 = 6 + 1 \)

  3. The value of \( b \):

    • \( b = 7 \)

In summary:

  • \( b - 1 + 1 = 6 + 1 \)
  • \( b = 7 \) (which means Alexa popped 7 balloons)