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STatiana [176]
3 years ago
15

How do I solve 3x-7y=63 and 4x+3y=-27by addition?

Mathematics
1 answer:
blagie [28]3 years ago
5 0
Multiply eqn 1 by 3 and eqn 2 by 7 then adding them will cancel Y. and X can be found.
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asambeis [7]

Answer:

The ratio of blackberries to sugar is 13 : 56 or 13/56, which is already in the in the simplest form.

Step-by-step explanation:

As we have to make 100g of jam

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The amount of sugar needs to be added to the mixture: 100 - (57 - 13) = 56g

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Answer:

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Zigmanuir [339]

Answer:

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Step-by-step explanation:

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X = 7. 7 x 4 = 28 and 28 + 3 = 31.

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