Question

the sum of two integers is -20 if one of the integer is 10 find the other​

Answer 1

Let one integer be

$x$

Then,

$x + 10 = - 20$

So,

$x = - 20 - 10 \\ x = - 30$

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Answer 2

let the number be x and y.

x+y =20

x-y=10

addin both above equation we get,

2x= 30

x=15

now x+y=20

thus y=20-x

y=20-15

y=5

the number are 15 and 5

and pruduct is75.