Question

expressao numerica 1+(1/2-1/5)-(7/4-5/4)

Answer 1

1 + (1/2 - 1/5) - (7/4 - 5/4)
1 + (5/10 - 2/10) - (2/4)
1 + 3/10 - 1/2
= (10 + 3 - 5)/10 = 8/10 = 4/5

Answer 2

Resposta:

4/5

Explicação passo-a-passo:

1 + (1/2 - 1/5) - (7/4 - 5/4)

1 + (5 - 2/10) - (7 - 5/4)

1 + 3/10 - 2/4

1 + 3/10 - 1/2⇒o mmc (1,10,2) = 10

10 + 3 - 5/10

8/10 ÷ 2

4/5

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