jkw1222p0ttvq
jkw1222p0ttvq jkw1222p0ttvq
  • 25-10-2019
  • Mathematics
contestada

Solve the system by substitution.
system
A. (–8, 7, 5)
B. (–8, –7, 5)
C. (8, –7, 5)
D. (–8, –7, –5)

Solve the system by substitution system A 8 7 5 B 8 7 5 C 8 7 5 D 8 7 5 class=

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KurdishPotato
KurdishPotato KurdishPotato
  • 25-10-2019

Answer:

x =-8 y= -7 z= 5

Step-by-step explanation:

if z = 5

2x - y +5 = -4 ➡2x - y = -9

3y - 2x - 5 = -10 ➡ 3y -2x = -5 adding these up 2y = -14 (2x eliminated) y is -7

by replacing z and y you can find x too

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clowcat
clowcat clowcat
  • 25-10-2019
The answer is B hope this helps!
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