14. Erika spent 3 of her allowance. Write an equivalent fraction for the amount she did NOT spend.
Erika spent 3/1 of her allowance. To find the fraction for the amount she did not spend, we need to subtract 3/1 from 1/1 (which represents her entire allowance):
1/1 - 3/1 = (1-3)/1 = -2/1
However, this fraction is not in its simplest form, because it has a negative numerator. To make it positive, we can flip the fraction over and change the sign:
-2/1 = -2 => 2/(-1) = -2/1
Now we have an equivalent fraction that represents the amount Erika did not spend: -2/1 or 2/(-1).
To find the equivalent fraction for the amount Erika did not spend, we need to subtract the amount she spent from her total allowance.
Let's say Erika's total allowance is represented by the fraction 1/1.
Since she spent 3 units of her allowance, we can represent this as 3/1.
To find the amount she did not spend, we subtract the amount she spent from her total allowance:
1/1 - 3/1
To subtract fractions, the denominators need to be the same. In this case, the denominators are already the same, so we can subtract the numerators:
(1 - 3)/1
-2/1
Therefore, the equivalent fraction for the amount Erika did not spend is -2/1.
To find an equivalent fraction for the amount Erika did not spend, we need to determine the fraction form of the amount she spent and then subtract it from 1.
Erika spent 3 parts out of her total allowance, which is equivalent to the fraction 3/1 since the entire allowance is considered as one part.
To find the fraction of the amount she did not spend, we subtract the fraction she spent from 1:
1 - 3/1 = 1 - 3 = -2/1
However, a negative fraction does not make sense in this context, so we need to rewrite it in a more meaningful form.
Since we know that Erika's total allowance is divided into 1 part, and she spent 3 parts, the remaining amount she did not spend is 1 - 3 = -2 parts.
To write this in a positive form, we need to change the -2 parts into positive, which means multiplying the denominator by -1:
-2/1 x -1/-1 = 2/1
Therefore, the equivalent fraction for the amount Erika did not spend is 2/1.