Question

what should be added to 8/9 to get -21/19
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Answer 1

Answer:

-413 / 171

Step-by-step explanation:

let the second number be - x

then,

8/9+ x =-29/19

x = -29/19 - 8/9

x = [(-29 × 9) - (8 × 19)] /171

x = [-261 - 152] /171

x = -413 / 171