xandermdel xandermdel

03-04-2020
Mathematics

contestada

a solution of a system of linear equations

x - y = 5
- 3 x + y = - 1

Respuesta :

ghanami ghanami

05-04-2020

Answer:

one solution : (-2 ; -7)

Step-by-step explanation:

hello :

x - y = 5 ....(*)

- 3 x + y = - 1 ....(**)

by (*) : y=x-5

by(**) : y = 3x-1

3x-1 = x -5

3x-x=-5+1

2x= -4

x= -2

but : y = x-5 so : y= -2-5=-7

one solution : (-2 ; -7)

Answer Link

Otras preguntas

Solve the system of equations.3x+3y+6z=33x+2y+6z=74x+4y+7z=4

Given the inequalities y > 5x-8 and y >3x+4, find the point that satisfies one inequalities but not them all

Kim estimates that the faucet in her kitchen drips at a rate for 1 drop every 2 seconds. Erik wants to klnow how many times the faucet drips in a week.

a person who studies word origins and meanings would most likely be a

What is a Mandala Autobiography?

What is a Mandala Autobiography?

At the school carnival, Carmen sold 3 times as many hot dogs as Shawn. The two of them sold 152 hot dogs altogether. How many hot dogs did Carmen sell? 51382111

At the school carnival, Carmen sold 3 times as many hot dogs as Shawn. The two of them sold 152 hot dogs altogether. How many hot dogs did Carmen sell? 51382111

2(n-3)=4n+1 this sucks not knowing the answer

I = {1, 2} List all possible subsets of the given set.