sahbynah
sahbynah sahbynah
  • 25-11-2019
  • Mathematics
contestada

Solve the given system of equations by substitution
x - y = 2, 2x + y = 7

Respuesta :

Yang100
Yang100 Yang100
  • 25-11-2019

Answer:

x=10/3, y=4/3. (10/3, 4/3).

Step-by-step explanation:

x-y=2

2x+y=7

-----------

x=y+2

2(y+2)+y=7

2y+4+y=8

3y+4=8

3y=8-4

3y=4

y=4/3

x-4/3=2

x=2+4/3

x=6/3+4/3=10/3

x=10/3, y=4/3.

Answer Link

Otras preguntas

I’m confused on this one
_____________ is a form of domination in which one country imposes its political, economic, social, and cultural institutions on an indigenous population and th
consider a balloon that has a volume V it contains in moles of gas it has internal pressure of P its temperature is T if the balloon is heated to a temperature
please help wil mark branlist if you are right What is the value of y if y = |– 5|
Why does the pilobolus use such an explosive method to disperse its spores??
find the y=a(x-h)^2+k of 5=(2x^2-8x)-y
Why did Churchill replace chamberlain as Britain’s new prime minister shortly after World War II begins
Please help ASAP !!!
A university professor is supposed to teach, engage in scholarship, and provide service to the university. my measure of professor performance is the mean stude
1. Visit a Web site for a company that sells products or services online. Then go to that company's corporate Web site. Compare the product/service sales site w