athenacamacho5305 athenacamacho5305
  • 03-06-2020
  • Mathematics
contestada

3) The sum of two numbers is 20. Their
difference is -2. What are the two numbers?

3 The sum of two numbers is 20 Their difference is 2 What are the two numbers class=

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blueninjaalienz
blueninjaalienz blueninjaalienz
  • 03-06-2020

Answer: 9, 11 (or for the picture 48 and 52)

Step-by-step explanation:

The sum of two numbers (x, y) is 20;

x+y=20

One is 2 greater than than the other;

y=x+2

Now, we can put that in for y;

x+(x+2)=20

And solve;

2x+2=20

2x=18

x=9

Now, substitute in the value of x into the second equation;

y=9+2

And we get our answer.

y=11

My explanations are bad :(

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