Question

Resolva as equações:
2x+5y-2z=56
9x-2y+3z=16
4x+4y-4z=72

Answer 1

2x = 56 - 5y + 2z

x = 28 - 5/2y + z

x = 28 - 5/2y + z, y € R, z € R

9x = 16 + 2y - 3z

x = 16/9 + 2/9y - 1/3z

x = 16/9 + 2/9y - 1/3z, y € R, z € R

4x = 72 - 4y + 4z

x = 18 - y + z

x = 18 - y + z, y € R, z € R