ntheo919
contestada

Express 3*(4*5) as a common fraction given a*b= (10a+b)/(a+b).

Note that a and b are single-digit positive numbers.

Respuesta :

Stephen46

Answer:

a*b= (10a+b)/(a+b)

3*(4*5)

First solve the ones in the bracket first

That's

(4 * 5) is

[tex] \frac{10(4) + 5}{4 + 5} = \frac{40 + 5}{5} = \frac{45}{5} = 9[/tex]

We have

3 * 9

That's

The final answer is

[tex] \frac{10(3) + 9}{3 + 9} = \frac{30 + 9}{12} = \frac{39}{12} [/tex]

Hope this helps you

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