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Amir spent RM18 for a bottle of detergent, 2 pencils and 3 light bulbs while Siti spent RM12 for 3 bottles of?

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Amir spent RM18 for a bottle of detergent, 2 pencils and 3 light bulbs while Siti spent RM12 for 3 bottles of detergent, 2 pencils and a light bulb and Sarah spent RM9 for a bottle ...show more
Update : a)write a linear system from the above statements and transform it into a ...show more
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A miscategorized question - it belongs into the math or similar department.
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Amir spent RM18 for a bottle of detergent, 2 pencils and 3 light bulbs while Siti spent RM12 for 3 bottles of?
Amir spent RM18 for a bottle of detergent, 2 pencils and 3 light bulbs while Siti spent
RM12 for 3 bottles of detergent, 2 pencils and a light bulb and Sarah spent RM9 for a
bottle of detergent, 4 pencils and a light bulb. If x, y and z represent the price per unit
for detergents, pencils and light bulbs respectively,
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