fatemeh bought 8 pencils for AED 3 each and 5 black pens for AED 6 each. How much did she pay in the cashier? with unit
1 answer:
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Answer:
- x = -8.5
- 2(x + 3.5) = -10
- => 2x + 7 = -10
- => 2x = -10 - 7
- => 2x = -17
- => x = -8.5
Therefore, the answer is x = -8.5.
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