npadilla4 npadilla4
  • 25-09-2020
  • Mathematics
contestada

how do I do
y=7x-5
2x+y=13

Respuesta :

hbj
hbj hbj
  • 25-09-2020

Answer:

x = 2, y = 9

Step-by-step explanation:

y = 7x - 5

2x + y = 13

These equations can both be set to equal y.

y = 7x - 5

y = -2x + 13

Now that they both equal y, you can set them equal to each other.

7x - 5 = -2x + 13

add 2x to both sides

9x - 5 = 13

add 5 to both sides

9x = 18

divide by 9

x = 2

plug x into either equation

y = 7(2) - 5

y = 14 - 5

y = 9

2(2) + y = 13

4 + y = 13

y = 9

Answer Link

Otras preguntas

Conjugate jugar to the subject "Ricardo".
Which of the following lines is an example of anapest? A.and the sheen of their spears was like stars on the sea, B.why so pale and wan,fond lovers? C.shall i c
Our free enterprise system directly impacts decisions at all of the following levels of government except: Local government State government Tribal government
If f (x) = 8(5x-2) find f -1 (x).
HELP PLEASE! Choose 3 of the water quality indicators write a summary of what it is
How many solutions would the following system of equations have? y=3x+2, and y=3x-4 is it 0, 1 or infinite ?
Which of the following statements is false? a. The instructions for making some proteins are not specified by genes. b. An organism's genes determine its inheri
Math help ASAP !!!Show work!
The director of a community recreation center conducted a six-week study to examine the effects of four types of exercise—strength training, flexibility trainin
8x²y²-18 factorise in process​