Question

What two integers have a sum of -21 and a difference of 11?

Answer 1

Answer:

I think this is your required answer

Step-by-step explanation:

Let,

two integers be a and b

Sum of integers=-21

Difference of integers=11

a+b= -21

This is equation 1

a-b=11

This is equation 2

solve eq1 and eq2

a+b= -21

a-b= 11

----------------------------

2a= -10

a=-5

subtitute a value in eq1

-5+b=-21

b= -21+5

b= -16

so integers are -5 and -16

Answer 2

Answer:

using elimination method

a + b = -21 — 1

a - b = 11

——————

2a = ‐10

a = -5

put a in equation 1

a + b = -21

-5 + b = -21

b = -21+5

b = -16

no.s are -5 and -16

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