Question

Determine valor de X no sistema
x + 2y + 3z = 14
4y + 5z = 23
6z =18​

Answer 1

6z=18

z=18/6

z=3

4y+5.3=23

4y+15=23

4y=23-15

4y=8

y=8/4

y=2

x+2.2+3.3=14

x+4+9=14

x=14-13

x=1

Answer 2

z = 18/6 = 3

4y = 23 -3(5)

y = 8/4 = 2

x = 14 -(2(2) + 3(3))

x = 14 -13

x = 1