roseh048
roseh048 roseh048
  • 02-04-2020
  • Mathematics
contestada

The sum of two numbers is 39 and the difference is 3. What are the numbers?

Respuesta :

Officialalehpeter
Officialalehpeter Officialalehpeter
  • 02-04-2020

Answer: 21 & 18

Step-by-step explanation:

Sum of two numbers is 39

Difference is 3

Let the numbers be x & y

X+y=39........equation 1

X-y=3...........equation 2

X=3+y............equation 3

Substitute equation 3 into equation 1

(3+y)+y=39

3+y+y=39

3+2y=39

2y=39-3

2y=36

Y=36/2

Y=18

Substitute for y in equation 2

X-y=3

X-18=3

X=3+18

X=21

The two numbers are 21 & 18

Answer Link

Otras preguntas

Simplify 2(5x-3)-(2x+4), 24x-12y+40÷4, (2x)(3y)+2(-xy)
A pea plant is heterozygous for height (Tt). Which allele will be carried by a pollen grain produced by the plant?  A.T only  B.t only  C.T and t  D.T or t
I need help on my English homework I have no
Name two things found in a plant cell that are not found in an animal cell.
How did world war 1 contribute to the collapse of the Russian monarchy?
if f(x)=3x+7 and g(x)=2x-5 find g(f(-3))A. -26 B.-9 C. -1 D. 10
what is an example of a narrative poem
What is the value of x? A right triangle with a short leg measuring 5, a long leg measuring 5, and the hypotenuse as x.A. 10 B. 5C. [tex] 2\sqrt5 [/tex]D. [tex
The radius of a bicycle wheel is 12 in. What is the approximate circumference of the wheel?
What is the value of x? A right triangle with a short leg measuring 5, a long leg measuring 5, and the hypotenuse as x.A. 10 B. 5C. [tex] 2\sqrt5 [/tex]D. [tex