Respuesta :

kritter1
Let the first number x and the second number be y. 

x+y=25 
x-y=7 <-- solve for x and y now

x=7+y 

(7+y)+y=25 <-- substitute in the value of x found above
7+2y=25
2y=25-7
2y=18
y=18/2
y=9 

x-y=7 
x-9=7 
x=7+9 
x=16 

Therefore, the two numbers are 9 and 16, 

Hope I helped :) 

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