Let’s solve each equation one by one. Remember: for one-step equations with addition or subtraction, we do the
opposite operation to both sides to get the variable alone.
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1. q + 7 = 10
Subtract 7 from both sides:
q = 10 - 7 →
q = 3
2. x + 10 = 17
Subtract 10 from both sides:
x = 17 - 10 →
x = 7
3. 84 = q - 17
Add 17 to both sides:
84 + 17 = q →
q = 101
4. i + 22 = 27
Subtract 22 from both sides:
i = 27 - 22 →
i = 5
5. r - 7 = 15
Add 7 to both sides:
r = 15 + 7 →
r = 22
6. x + 9 = 18
Subtract 9 from both sides:
x = 18 - 9 →
x = 9
7. a + 8 = 2
Subtract 8 from both sides:
a = 2 - 8 →
a = -6
8. l - 8 = 15
Add 8 to both sides:
l = 15 + 8 →
l = 23
9. s + 13 = 27
Subtract 13 from both sides:
s = 27 - 13 →
s = 14
10. 44 + t = 15
Subtract 44 from both sides:
t = 15 - 44 →
t = -29
11. 28 = n - 13
Add 13 to both sides:
28 + 13 = n →
n = 41
12. d - 11 = 12
Add 11 to both sides:
d = 12 + 11 →
d = 23
13. v + 24 = 100
Subtract 24 from both sides:
v = 100 - 24 →
v = 76
14. 6 - z = 88
Subtract 6 from both sides:
- z = 88 - 6 → -z = 82
Multiply both sides by -1:
z = -82
*(Alternative way: Add z to both sides and subtract 88: 6 - 88 = z → z = -82)*
15. 5 = 4 - k
Subtract 4 from both sides:
5 - 4 = -k → 1 = -k
Multiply both sides by -1:
k = -1
*(Alternative: Add k to both sides and subtract 5: k = 4 - 5 → k = -1)*
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Final Answer:
1. q = 3
2. x = 7
3. q = 101
4. i = 5
5. r = 22
6. x = 9
7. a = -6
8. l = 23
9. s = 14
10. t = -29
11. n = 41
12. d = 23
13. v = 76
14. z = -82
15. k = -1
Parent Tip: Review the logic above to help your child master the concept of addition equations worksheet.
