Question

If the sum of two integers is-21 and one of them is-10 then the other is

Answer 1

Let integer be y
according to question, y+(-10)=-21
Then y= - 11

Answer 2

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Let the required number be x.

According to question ,

$x + ( - 10) = - 21 \\ \\ x - 10 = - 21 \\ \\ x = - 21 + 10 \\ \\ x = - 11$

Verification

$- 11 + ( - 10) = - 21 \\ \\ - 11 - 10 = - 21$

LHS = RHS , Hence verified.


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