Let’s go through each problem one by one. We’re checking whether the given value of the variable makes the equation true.
---
1. y + 5 = 17, y = 22
Plug in y = 22:
22 + 5 = 27 → but we need 17.
27 ≠ 17 →
False
---
2. 4x = 24, x = 6
Plug in x = 6:
4 × 6 = 24 → matches!
→
True
---
3. n ÷ 7 = 3, n = 21
Plug in n = 21:
21 ÷ 7 = 3 → matches!
→
True
---
4. s – 13 = 21, s = 34
Plug in s = 34:
34 – 13 = 21 → matches!
→
True
---
5. 20 × y = 300, y = 160
Plug in y = 160:
20 × 160 = 3200 → way bigger than 300.
3200 ≠ 300 →
False
*(Actually, correct y would be 300 ÷ 20 = 15)*
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6. n + 40 = 92, n = 50
Plug in n = 50:
50 + 40 = 90 → but we need 92.
90 ≠ 92 →
False
*(Correct n would be 92 – 40 = 52)*
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7. 27 = 3m, m = 9
Plug in m = 9:
3 × 9 = 27 → matches!
→
True
---
8. 7 + t = 21, t = 11
Plug in t = 11:
7 + 11 = 18 → but we need 21.
18 ≠ 21 →
False
*(Correct t would be 21 – 7 = 14)*
---
9. x – 8 = 24, x = 32
Plug in x = 32:
32 – 8 = 24 → matches!
→
True
---
10. n + 24 = 61, m = 45
Wait — this is tricky. The equation uses
n, but they give a value for
m.
That means we can’t even check it properly — unless it’s a typo.
But as written:
Equation: n + 24 = 61 → so n should be 61 – 24 = 37
But they say m = 45 — which is not related to n.
So if we assume they meant “n = 45”, then:
45 + 24 = 69 ≠ 61 → False
If they really meant m, then it’s irrelevant → still doesn’t make the equation true.
Either way →
False
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✔ Final Answers:
1. False
2. True
3. True
4. True
5. False
6. False
7. True
8. False
9. True
10. False
Final Answer:
False, True, True, True, False, False, True, False, True, False
Parent Tip: Review the logic above to help your child master the concept of 9th grade algebra practice worksheet.