jaymaddness101
jaymaddness101 jaymaddness101
  • 17-11-2021
  • Mathematics
contestada

Solve the following equation using the subsitution method

3x-5y= 19
2x - y=4
​

Respuesta :

Paounn
Paounn Paounn
  • 17-11-2021

Answer:

[tex]\frac17; -\frac{26}7[/tex]

Step-by-step explanation:

Let's solve the second for y (it has a coefficient of -1, so it's the easiest to work with)

[tex]y= 2x-4[/tex]

And then replace it in the first.

[tex]3x-5(2x-4)= 19\\3x-10x+20 = 19 \rightarrow -7x=-1 \rightarrow x=\frac17[/tex]

now let's use this value of x to find y

[tex]y= 2(\frac17)-4 = \frac27 -\frac{28}7 = -\frac{26}7[/tex]

Answer Link

Otras preguntas

First, i would like you to get in a comfortable position and begin the breathing techniques that we have been practicing. when you sense that you have arrived a
Which of the following interiors would artist ernesto neto most like to create a work for?
A web designer must effectively communicate when he/she designs a web page. If there is too much information to put onto one page, he or she will split the info
I don't understand this question
Why did michelangelo leave florence for rome in 1505?
if someone pays 48.51 dollars for 12.6 gallons how much money will they get for 1 gallon
Identify the following. The long, long train traveling to Canada, winding through the Rockies. fragment simple sentence complex sentence
Considering that microwave ovens radiate at 2.45 GHz, how would you respond to the debate
I need help can someone help me
Carlos says that 17.43 divided by 100 is the same as 174.3 times 0.01 Is he correct? Explain