Question

(a) What should be added to 10 so that the sum becomes -21?
(b) What is the number which gives 12 when -39 is subtracted from it?​

Answer 1

Step-by-step explanation:

$a) \: - 21 - 10$

$21 + 10 = - 31$

$b) - 39 + 12$

$39 - 12$

$- 27$

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Answer 2

Answer:

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