jcastronakaya
jcastronakaya jcastronakaya
  • 12-02-2019
  • Mathematics
contestada

The sum of two numbers is 63, and their difference is 7. Find the numbers. Use x-(63-x)=7

Respuesta :

bibiibii
bibiibii bibiibii
  • 12-02-2019

Answer:

The two numbers are 28 and 35.

Step-by-step explanation:

x + y = 63  

x - y = 7  

Get one equation with one variable. We can't solve for a variable if we had two variables in one equation.

Add the two equations together.  

2x = 70  

x = 35  

You see, the y's canceled out and we can solve for x.  

Now plug x back in to solve for y.  

35 - y = 7  

-y = -28  

y = 28  

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