Respuesta :

[tex]-12.7[/tex]

Express it as:

[tex]-\frac{12.7}{1}[/tex]

Multiply by 10 the numerator and the denominator:

[tex]-\frac{12.7}{1}\times\frac{10}{10}=-\frac{127}{10}[/tex]

so:

[tex]-12.7=-\frac{127}{10}[/tex]

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For a mixed number, we can use the following formula:

[tex]a\frac{b}{c}=\frac{ac+b}{c}[/tex]

So:

[tex]11\frac{1}{4}=\frac{11\cdot4+1}{4}=\frac{44+1}{4}=\frac{45}{4}[/tex]