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Evaluate the expression shown below and write your answer as a fraction in simplest form.

[tex]\frac{3}{2} \cdot \left(\frac{5}{4} + \frac{5}{36}\right)[/tex]


Sagot :

To evaluate the expression

[tex]\[ \frac{3}{2} \cdot \left(\frac{5}{4} + \frac{5}{36}\right), \][/tex]

we follow these steps:

1. Add the fractions inside the parentheses:
[tex]\[ \frac{5}{4} + \frac{5}{36}. \][/tex]

To add these fractions, we need a common denominator. The least common multiple (LCM) of 4 and 36 is 36. Convert both fractions to have this common denominator:

[tex]\[ \frac{5}{4} = \frac{5 \times 9}{4 \times 9} = \frac{45}{36}. \][/tex]

The second fraction is already over 36:

[tex]\[ \frac{5}{36}. \][/tex]

Now add the two fractions:

[tex]\[ \frac{45}{36} + \frac{5}{36} = \frac{45 + 5}{36} = \frac{50}{36}. \][/tex]

Simplify [tex]\(\frac{50}{36}\)[/tex] by dividing the numerator and the denominator by their greatest common divisor (GCD), which is 2:

[tex]\[ \frac{50 \div 2}{36 \div 2} = \frac{25}{18}. \][/tex]

So,

[tex]\[ \frac{5}{4} + \frac{5}{36} = \frac{25}{18}. \][/tex]

2. Multiply the result by the fraction outside the parentheses:
[tex]\[ \frac{3}{2} \cdot \frac{25}{18}. \][/tex]

To multiply fractions, multiply the numerators together and the denominators together:

[tex]\[ \frac{3 \times 25}{2 \times 18} = \frac{75}{36}. \][/tex]

Simplify [tex]\(\frac{75}{36}\)[/tex] by dividing the numerator and the denominator by their greatest common divisor (GCD), which is 3:

[tex]\[ \frac{75 \div 3}{36 \div 3} = \frac{25}{12}. \][/tex]

So, the evaluated expression is:

[tex]\[ \frac{3}{2} \cdot \left(\frac{5}{4} + \frac{5}{36}\right) = \frac{25}{12}. \][/tex]

Therefore, the simplified fraction result is [tex]\(\frac{25}{12}\)[/tex].