itzcollin52 itzcollin52

24-09-2021
Mathematics

contestada

ſ -4x + 3y = 23
1. Identify a solution to this system of equations:
x- y=-7
A. (-5,2)
- 2
B.(-2,5)
C. (-3,4)
D.(4,-3)

Respuesta :

anasweeney43 anasweeney43

25-09-2021

Answer:

(-2, 5)

Step-by-step explanation:

-4x+3y=23

x - y = - 7

x = y - 7

Substitution:

-4(y-7)+3y = 23

- 4y + 28 + 3y = 23

y = 23 - 28

-y = -5

y = 5

Substitution:

x - 5 = - 7

x = - 7 + 5

x - 2

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