Question

Hasil subtitusi dari 3x + 2y=-2 dan x - 2y=10

Answer 1

Verified answer

3x+ 2y = -2
x - 2y = 10
x = 10 + 2y

3x + 2y = -2
3(10 + 2y) + 2y = -2
30 + 6y + 2y = -2
8y = -2 - 30
8y = -32
y = -32 : 8
y = -4

x = 10 + 2y
x = 10 + 2(-4)
x = 10 - 8
x = 2

Hasilnya x = 2 ; y = -4