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Primary 1 | Maths
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Date Posted: 5 years ago
Views: 807
A+B = 9
2A + 3 = C
C - 9 = A
2A + 3 - 9 = A
2A - 6 = A
A = 6
So C = A + 9 = 6 + 9 = 15
A + B + C = 9 + 15 = 24
However, if 9 - C = A instead,
Then 2(9 - C) + 3 = C
18 - 2C + 3 = C
21 = 3C
C = 7
A + B + C = 9 + 7 = 16
2A + 3 = C
C - 9 = A
2A + 3 - 9 = A
2A - 6 = A
A = 6
So C = A + 9 = 6 + 9 = 15
A + B + C = 9 + 15 = 24
However, if 9 - C = A instead,
Then 2(9 - C) + 3 = C
18 - 2C + 3 = C
21 = 3C
C = 7
A + B + C = 9 + 7 = 16
See 1 Answer
done
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hope this helps
Date Posted:
4 years ago
Kinda confusing
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