To find out how many stickers Rafael gave his friends, we can analyze the information given, represent it mathematically, and then solve it step-by-step.
Analysis
- Total stickers Rafael bought: 61 stickers
- Stickers given to his teacher: 45 stickers
- Stickers kept for himself: 13 stickers
- Stickers given to friends: Unknown (let's call this \( x \))
Representation
From the information we have, we can create an equation to represent the total number of stickers:
\[ \text{Stickers given to teacher} + \text{Stickers given to friends} + \text{Stickers kept} = \text{Total stickers} \]
Substituting the known values into the equation:
\[ 45 + x + 13 = 61 \]
Solve
Now we can solve for \( x \):
- Combine the constants on the left side of the equation:
\[ 45 + 13 = 58 \]
So the equation now is:
\[ 58 + x = 61 \]
- Subtract 58 from both sides to isolate \( x \):
\[ x = 61 - 58 \]
\[ x = 3 \]
Conclusion
Rafael gave 3 stickers to his friends.