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steposvetlana [31]
4 years ago
8

Twice the difference of a number and 9 is equal to three times the sum of the number and 6

Mathematics
1 answer:
elixir [45]4 years ago
8 0
This problem can be written as an algebraic equation like this 2(x-9) = 3(x+6)
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Answer:

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Step-by-step explanation:

To solve, we can set up a proportion and solve.

You earn $45 for 7.5 hours of work, and you earn $ x for 30 hours of work

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45*30=7.5*x

1350=7.5x

To solve for x, we need to get x by itself. It is being multiplied by 7.5. To undo this, divide both sides by 7.5

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kumpel [21]

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Step-by-step explanation:

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12-2(7x-3)=3(1-2x)-5x
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