If x + y – z = – 4 and 3x =2y=z,then x-y+z is​

Jawaban:

20

Penjelasan dengan langkah-langkah:

3x = z

x = 1/3 z.......(1)

2y = z

y = 1/2z........(2)

x + y – z = – 4

1/3z + 1/2z – z = –4

2/6z + 3/6z – 6/6z = –4

–1/6z = –4

z = 24.....(3)

substitusikan persamaan (1) & (2)

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

=2/6z – 3/6z + 6/6z

= 5/6z

substitusikan persamaan (3)

5/6z = (5/6).24

= 20