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skelet666 [1.2K]
3 years ago
10

-3(x + 6) idk what the answer is. ​

Mathematics
1 answer:
cestrela7 [59]3 years ago
7 0

Answer:

-3x-18

Step-by-step explanation:

-3(x+6)

-3x-3x x 6

-3x-18

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Let us assume that, x liters of the 5% hydrochloric acid and y liters of the 45% hydrochloric acid solutions are combined.

As Rajan need total of 1 liter of solution, so

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As Rajan needs 5% hydrochloric acid and 45% hydrochloric acid to make a 1 liter batch of 15% hydrochloric acid, hence acid content of the mixture of two acids will be same as of the final one, so

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Putting value of x from equation 1 in equation 2,

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