Answer:
O = 4 Diamond = 18 Δ = - 5
Explanation:
The O is 4 because in clue 2 we see that 3 x 4 = 12
Now we can solve clue 1.
Diamond + 2 = 5 * O
Diamond + 2 = 5 * 4
Diamond + 2 = 20 Subtract 2 from each side
Diamond = 20 - 2
Diamond = 18
And now we can solve clue 3 for the Δ
2 * O = Diamond + 2 * Δ
2 * 4 = 18 + (2 * Δ)
8 = 18 + (2 * Δ) Subtract 18 from both sides.
8 - 18 = (2 * Δ)
- 10 = (2 * Δ) Divide each side by 2
- 10 / 2 = (2 * Δ) / 2 The 2 on the right will cancel
- 10 / 2 = Δ
-5 = Δ
So O = 4 Diamond = 18 Δ = - 5