Question

13-(gave) o valor da expressao numeria 3/4 .(1/2 - 1/5) e?​

Answer 1

Resposta:

$\frac{3}{4} .( \frac{1}{2} - \frac{1}{5} ) = \frac{3}{4} . \frac{3}{10} = \frac{9}{40}$

Answer 2

Resposta:

9/40

Explicação passo-a-passo:

Transformando:3/4 , 1/2 e 1/5 em decimal

1/2= 0,5

1/5=0,2

3/4= 0,75

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3/4.(1/2-1/5)=0,75.(0,5-0,2)

3/4.(1/2-1/5)=0,75.(0,3)

3/4.(1/2-1/5)= 75/100.(3/10)

3/4.(1/2-1/5)=3.(75)/1000

3/4.(1/2-1/5)= 225/1000

3/4.(1/2-1/5)= 225÷5/1000÷5

3/4.(1/2-1/5)=45/200

3/4.(1/2-1/5)=45÷5/200÷5

3/4.(1/2-1/5)= 9/40

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Espero ter ajudado!