Respuesta :

To subtract fractions, find the LCD and then combine.

Answer is: -3

Answer:

-3

Step-by-step explanation:

Multiply and divide {left to right}:

20/4 = 5

Add and subtract {left to right}:

5 - 8 = -3

{Negative + Positive = Negative}

Fraction:

The fractions have unlike denominators. First, find the Least Common Denominator and rewrite the fractions with the common denominator.

LCD(20/4, 8/1) = 4

Multiply both the numerator and denominator of each fraction by the number that makes its denominator equal the LCD. This is basically multiplying each fraction by 1.

[tex](\frac{20}{4} *\frac{1}{1} )-\frac{8}{1} *\frac{4}{4} )=[?][/tex]

Complete the multiplication and the equation becomes

[tex]\frac{20}{4} -\frac{32}{4} =[?][/tex]

The two fractions now have like denominators so you can subtract the numerators.

Then:

[tex]\frac{20-32}{4} = \frac{-12}{4}[/tex]

Since -12 divided by 4 equals -3 then,

[tex]\frac{-12}{4}=-3[/tex]

Therefore, -3 is the correct Answer or Fraction form = -1/3

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