3 years ago

6x - 2y - 3z = 4 3x + 2y + 2z = 7 9x - 3y + 3z = -9

Mathematics

1 answer:

Anna71 [15]3 years ago

6 0

Answer:

X= 1, Y= 4, Z= -2

Step-by-step explanation:

(3(6x-2y-3z=4)) + (-2(9x-3y+3z=-9))

Z=-2

Substitute in Z

(6x-2y+6=4) + (3x+2y-4z=7)

X=1

Substitute in Z and X

3+2y-4=7

Y=4

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