Question

Solve the system by substitution.

system
A. (–8, 7, 5)
B. (–8, –7, 5)
C. (8, –7, 5)
D. (–8, –7, –5)

Answer 1

The answer is B hope this helps!

Answer 2

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