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

Find the value of x from the following given figures.

3. How do Christian beliefs about God/ ultimate reality, human nature, the world, and the ultimate goal or purpose of human existence compare with those of the

A _______ is a collection of software routines that can be used by other software. Licensing terms for this type of software are important for programmers who u

3. How do Christian beliefs about God/ ultimate reality, human nature, the world, and the ultimate goal or purpose of human existence compare with those of the

Which statement about y=x^2-14x+45 is true

How did Rutherford's gold foil experiment show that Thomson's plum pudding model of the atom was incorrect?

This circle dance was a widespread West African custom and part of the process of cultural unification of African Americans:

With what tension must a rope with length 3.00 mm and mass 0.105 kgkg be stretched for transverse waves of frequency 40.0 HzHz to have a wavelength of 0.790 mm

general solution4sin^x+9 cosx-6=0

Jack really wanted a date with Lacey, so he made sure to consider what had worked for him in the past when asking for a date. He thought about the type of appro