victoriafriddell victoriafriddell
  • 24-02-2017
  • Mathematics
contestada

Find two numbers with a sum of 20 and a difference of 14.

Respuesta :

kmart22
kmart22 kmart22
  • 24-02-2017
The anwser is 17 and 3. 17+3=20, and the difference is 14!
Answer Link
morgeron
morgeron morgeron
  • 24-02-2017
we can easily find this using equations.  what do we know?

X + Y = 20  and
-(X - Y = 14)        subtract the two equations..

X + Y = 20
-X + y = -14

2Y = 6
Y = 3        (our first number)  (put this into an original equation and solve)

X + Y = 20
X + 3 = 20    subtract 3 from both sides
X = 17

gives us our answer ....... 3 and 17
Answer Link

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