tolong dong bantu saya mengerjakan soal ini ,untuk besok nie

x + y + 2z = 2
3y - 4z = -5
6z = 3

6z = 3
z = 3/6
z = 1/2

3y - 4z = -5
3y - 4(1/2) = -5
3y - 2 = -5
3y = -5 + 2
3y = -3
y = -1

x + y + 2z = 2
x + (-1) + 2(1/2) = 2
x - 1 + 1 = 2
x = 2

x + y + 2z = 2
3y - 4z = - 5
6z = 3

6z = 3
6z ÷ 6 = 3 ÷ 6
z = 0,5

3y - 4z = - 5
3y - 4(0,5) = - 5
3y - 2 = - 5
3y - 2 + 2 = - 5 + 2
3y = - 3
3y ÷ 3 = - 3 ÷ 3
y = - 1

x + y + 2z = 2
x - 1 + 2(0,5) = 2
x - 1 + 1 = 2
x = 2

Maaf Kalau Salah