Tentukan nilai subtitusi 2x-y-7=0 x+y-2=0

Jawab:

x + y – 2 = 0

x = 2 – y

2x – y – 7

2(2-y) – y – 7 = 0

4 – 2y – y – 7 = 0

4 – 3y – 7 = 0

-3y = 7 -4 = 3

y = 3/3

y = 1

x = 2 – y

x = 2 – 1

x = 1

semoga membantu, maaf jika salah, jika benar tolong jadikan jawaban terbaik yah!!