Question

) O cálculo de ( 8/7 - 4/5) * 9/5, sera *

1 ponto

109/75

108/175

108/65

105/78

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Answer 1

Resposta:

108/175

Explicação passo-a-passo:

Simplificando:

((8/7 - 4/5)×9)/5

((8/7 - 4/5)×9)/5 = ((8/7 - 4/5)×9)/5:

((8/7 - 4/5)×9)/5

8/7 - 4/5 35. 8/7 - 4/5 = (5×8)/35 + (7 (-4))/35:

((5×8)/35 + (7 (-4))/35 9)/5

5×8 = 40:

((40/35 + (7 (-4))/35)×9)/5

7 (-4) = -28:

((40/35 + (-28)/35)×9)/5

40/35 - 28/35 = (40 - 28)/35:

((40 - 28)/35×9)/5

| 3 | 10

| 4 | 0

- | 2 | 8

| 1 | 2:

(12/35×9)/5

12/35×9 = (12×9)/35:

((12×9)/35)/5

((12×9)/35)/5 = (12×9)/(35×5):

(12×9)/(35×5)

35×5 = 175:

(12×9)/175

12×9 = 108:

Respostar:

| 108/175 |