1. X -4y=-2 2x+8y=-10 Menentukan harga x dan y dari dua persamaaan? Tolong bantu saya yaaa..

x - 4y = -2 => × 2 => 2x - 8y = -4
2x + 8y = -10 => × 1 => 2x + 8y = -10

di tambah
4x = -14
x = -14/4
x = -3 (2/4)
x = -3(1/2)

2x + 8y = -10
2( -14/4) + 8y = -10
-28/4 + 8y = -10
-7 + 8y = -10
8y = -10 + 7
8y = -3
y = -3/8

Jadi, nilai x = -3(1/2) dan nilai y = -3/8