Question

what number should be added 7/12 to get -4/15​

Answer 1

Answer:

-17/20

Step-by-step explanation:

Let x be the number to be added.

So,

$\frac{7}{12} + x = \frac{ - 4}{15} \\ x = \frac{ - 4}{15} - \frac{7}{12} \\ x = \frac{ - 4 \times 4 - 7 \times 5}{60} \\ x = \frac{ -16 -35}{60} \\ x = \frac{ -51}{60} \\ x = \frac{ -17}{20}$

Hence, -17/20 should be added.

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