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3 years ago

Which rational number must be added to3\7to get -3\4 ?

1 answer:

3 0

$\frac{3}{7}+x=-\frac{3}{4}\\\\\frac{3}{7}(\frac{4}{4})+x=-\frac{3}{4}(\frac{7}{7})\\\\\frac{12}{28}+x=-\frac{21}{28}\\\\x=-\frac{21}{28}-\frac{12}{28}\\\\x=-\frac{33}{28}=1\ \frac{5}{28}$

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Answer:

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Step-by-step explanation:

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step 1

Group terms that contain the same variable, and move the constant to the opposite side of the equation

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step 2

factor the leading coefficient

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step 3

Complete the square. Remember to balance the equation by adding the same constants to each side

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step 5

take square root both sides

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Step-by-step explanation:

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Step-by-step explanation:

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