Let's solve each of the simple equations step by step. These are basic linear equations that involve one variable, and we'll isolate the variable on one side of the equation.
---
1) $ x + 9 = 15 $
Step: Subtract 9 from both sides:
$$
x = 15 - 9 = 6
$$
✔ Answer: $ x = 6 $
---
2) $ x - 6 = -3 $
Step: Add 6 to both sides:
$$
x = -3 + 6 = 3
$$
✔ Answer: $ x = 3 $
---
3) $ 7v = 42 $
Step: Divide both sides by 7:
$$
v = \frac{42}{7} = 6
$$
✔ Answer: $ v = 6 $
---
4) $ z + 6 = 8 $
Step: Subtract 6 from both sides:
$$
z = 8 - 6 = 2
$$
✔ Answer: $ z = 2 $
---
5) $ 5w = 10 $
Step: Divide both sides by 5:
$$
w = \frac{10}{5} = 2
$$
✔ Answer: $ w = 2 $
---
6) $ u - 7 = -5 $
Step: Add 7 to both sides:
$$
u = -5 + 7 = 2
$$
✔ Answer: $ u = 2 $
---
7) $ y + 2 = 11 $
Step: Subtract 2 from both sides:
$$
y = 11 - 2 = 9
$$
✔ Answer: $ y = 9 $
---
8) $ v - 3 = 4 $
Step: Add 3 to both sides:
$$
v = 4 + 3 = 7
$$
✔ Answer: $ v = 7 $
---
9) $ x + 9 = 17 $
Step: Subtract 9 from both sides:
$$
x = 17 - 9 = 8
$$
✔ Answer: $ x = 8 $
---
10) $ 2x = 4 $
Step: Divide both sides by 2:
$$
x = \frac{4}{2} = 2
$$
✔ Answer: $ x = 2 $
---
✔ Final Answers:
1) $ x = 6 $
2) $ x = 3 $
3) $ v = 6 $
4) $ z = 2 $
5) $ w = 2 $
6) $ u = 2 $
7) $ y = 9 $
8) $ v = 7 $
9) $ x = 8 $
10) $ x = 2 $
---
🔍 Explanation Summary:
- For
addition/subtraction equations (like $ x + a = b $), move constants to the other side using opposite operations.
- For
multiplication/division equations (like $ ax = b $), divide both sides by the coefficient of the variable.
These are foundational skills in algebra — solving for the unknown variable by keeping the equation balanced.
Let me know if you'd like this as a printable answer key!
Parent Tip: Review the logic above to help your child master the concept of simple equations worksheet.