Question

Se X + 2y + 3z = 14, 4y + 5z = 23 e 6z = 18, determine o valor de X?

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+13= 14

x= 14-13

x= 1