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1 vote
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-example-1

2 Answers

7 votes
The answer is B hope this helps!
User Mihca
by
6.4k points
3 votes

Answer:

x =-8 y= -7 z= 5

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

User Jils
by
6.9k points
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