dancer4life5642 dancer4life5642
  • 03-02-2021
  • Mathematics
contestada

When solving this system of equations, what is the first step and why?
2x + y = 15
x-y=3

Respuesta :

Аноним Аноним
  • 03-02-2021

Answer:

Step-by-step explanation:

Rearrange:

x-y=3

x=3+y

Substitute  x as 3+y

so you can solve for y:

2(3+y)+y=15

6+3y=15

y=3

Use x=3+y to find x.

Answer Link

Otras preguntas

Which term matches the following definition? The emotional or sensory effect of a work O A. Aesthetic impact B. Historical context C. Symbolism D. Internal conf
Which of these inequalities are equivalent to r > -11? Check all that apply. -r < 11 3r < -33 3r > -33 -3r < 33 -3r > 33
Which statement best describes the alpha brain wave phase? (6 points) O Awake, focused, and relaxed O Groggy, sedated, and indifferent Torn, scrambled, and flus
Please answer from the picture below.
PLEASE HELP WILL GIVE BRAINLIST!!!
Who did you vote for president? And are you a democrat or republican
72 is between which 2 integers
What is the value of b? A.6 B.2sqr 13 C.3sqr13 D.3sqr14
Ned needs to solve the division problem shown. 40 ÷ 8=​
Author Matthew Hutson writes that getting a full night’s sleep can be challenging for teens. How does he develop this idea?