Respuesta :
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
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