3x+2y=30
3x-y=21
What’s the answer!...
Answers: 2
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How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?
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Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1
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