Let’s solve each equation one by one. Remember, we’re looking for the value of the letter (either
a or
y) that makes the equation true.
We can do this by subtracting the number on the left from the total on the right.
---
1. 5 + a = 7
→ Subtract 5 from both sides:
a = 7 - 5
a =
2
2. 40 + y = 45
→ Subtract 40 from both sides:
y = 45 - 40
y =
5
3. 10 + y = 15
→ Subtract 10 from both sides:
y = 15 - 10
y =
5
4. 39 + a = 41
→ Subtract 39 from both sides:
a = 41 - 39
a =
2
5. 20 + a = 22
→ Subtract 20 from both sides:
a = 22 - 20
a =
2
6. 24 + y = 29
→ Subtract 24 from both sides:
y = 29 - 24
y =
5
7. 48 + a = 50
→ Subtract 48 from both sides:
a = 50 - 48
a =
2
8. 15 + a = 17
→ Subtract 15 from both sides:
a = 17 - 15
a =
2
9. 10 + a = 12
→ Subtract 10 from both sides:
a = 12 - 10
a =
2
10. 34 + y = 39
→ Subtract 34 from both sides:
y = 39 - 34
y =
5
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All answers are either
2 or
5, depending on whether the variable is
a or
y.
Final Answer:
a = 2, y = 5 (for all equations)
Parent Tip: Review the logic above to help your child master the concept of basic algebraic equations worksheet.
