X + z = 3 2y – z = 1 x – y = 1

Jawaban:

x = ⅔

y = 1⅓

z = 2⅓

Penjelasan dengan langkah-langkah:

x+z=3

x=3-z

(3-z)-y=1

2-z=y

2(2-z)=1

4-2z=1

-2z=1-4

-2z=-3

z= ⅔

z= ⅔y= 2-⅔ = 1⅓

z= ⅔y= 2-⅔ = 1⅓x=3-⅔= 2⅓