nayelisolisgarcia nayelisolisgarcia
  • 01-09-2017
  • Mathematics
contestada

The difference of two numbers is 40. Their sum is 66. Find the numbers.

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 01-09-2017
first of all, x>y
x-y=40
and
x+y=66
add them equations together to eliminate

x-y=40
x+y=66 +
2x+0y=106

2x=106
divide by 2
x=53

sub back
x-y=40
53-y=40
minus 53 both sides
-y=-13
y=13


the numbers are 53 and 13
Answer Link
bri226
bri226 bri226
  • 01-09-2017
53-13 equals 40 and 13+53 is 66
Answer Link

Otras preguntas

Combine like terms to create an equivalent expression. 20(-1.5r+0.75)
Evaluate: Louv includes both scientific evidence and his own personal experiences in Last Child in the Woods. Which of the details best support his ideas about
Shading and light help the perception of what
Which is a limiting nutrient for plant growth? water nitrogen carbon oxygen
PSYCHOLOGYWhen one individual perceives the events of a car crash to be different than another person, which of the following will most likely be occurring? A.
f(x) = 2x2. What is f(3)?
What were the risks of fighting against apartheid in South Africa?​
The number 85% is equivalent to the fraction 85/100 . Pablo spelled 21 out of25 words correctly on his spelling test. Is this more or less then 85% of the world
At a track meet, a girl runs 52 meters in 8 seconds. What’s the unit rate?
Who was considered the first missionary? Cicero Abraham Paul Jesus