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Simplify the following expression:

[tex]\[ \left(-\frac{35}{4}\right) \div \left(-\frac{28}{9}\right) \][/tex]


Sagot :

To solve the problem [tex]\(\left(-\frac{35}{4}\right) \div \left(-\frac{28}{9}\right)\)[/tex], we need to follow the rules of fraction division. Dividing by a fraction is equivalent to multiplying by its reciprocal. Here are the steps to solve this:

1. Expression Review:
[tex]\[ \left(-\frac{35}{4}\right) \div \left(-\frac{28}{9}\right) \][/tex]

2. Reciprocal of the Divisor:
Find the reciprocal of [tex]\(-\frac{28}{9}\)[/tex]:
[tex]\[ \left( -\frac{28}{9} \right)^{-1} = -\frac{9}{28} \][/tex]

3. Multiplication by the Reciprocal:
Multiply [tex]\(-\frac{35}{4}\)[/tex] by [tex]\(-\frac{9}{28}\)[/tex]:
[tex]\[ \left(-\frac{35}{4}\right) \times \left(-\frac{9}{28}\right) \][/tex]

4. Multiply the Numerators and the Denominators:
Multiply the numerators:
[tex]\[ -35 \times -9 = 315 \][/tex]
Multiply the denominators:
[tex]\[ 4 \times 28 = 112 \][/tex]

5. Form the Fraction:
Place the product of the numerators over the product of the denominators:
[tex]\[ \frac{315}{112} \][/tex]

6. Simplifying the Fraction:
[tex]\[ \frac{315}{112} \approx 2.8125 \][/tex]

Therefore, the simplified result of [tex]\(\left(-\frac{35}{4}\right) \div \left(-\frac{28}{9}\right)\)[/tex] is [tex]\(\frac{315}{112}\)[/tex], which is approximately [tex]\(2.8125\)[/tex].