Question

which of the following
following is not equal to the others -40÷56 b)25÷-35 c)-5÷7 d)15÷21

Answer 1

Answer:

1. -1.4

2. -1.4

3. -1.4

4. 1.4

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Answer 2

Answer:

$- \frac{40}{56} = - \frac{5}{7} \\ - \frac{25}{35} = - \frac{5}{7} \\ - \frac{5}{7} = - \frac{5}{7} \\ \frac{15}{21} = \frac{5}{7}$

it means option (d) is not equal to the others.