soal SPLDV 2x - 5y = 8 & 3x - 4y = 5 . Menggunakan metode subsitusi adalah.....

2x - 5y = 8
3x - 4y = 5

2x - 5y = 8
2x = 8 + 5y
x = 4 + 5/2 y

3x - 4y = 5
3 (4 + 5/2 y) - 4y = 5
12 + 15/2 y - 4y = 5
12 + 7/2 y = 5
7/2 y = 5 - 12
7/2 y = -7
2/7 × 7/2 y = - 2/7 × 7
y = -14/7
y = -7

2x - 5y = 8
2x - 5(-7) = 8
2x + 35 = 8
2x = 8 - 35
2x = -27
x = -27/2
x = -13 ½

Semoga membantu, maaf kalau salah :)