1.) X + 3y =10 2x - y =6 2.) 2x + 3y = -6 X - 4y = -3 Tolong ya inj besok di kumpuL

MAPEL = MATEMATIKA
KELAS = 8
BAB = SPLDV

1.)
x + 3y = 10 |×2
2x - y = 6 |×1

2x + 6y = 20
2x - y = 6
__________-
7y = 14
y = 14 ÷ 7
y = 2

x + 3y = 10
x + 3(2) = 10
x = 10 - 6
x = 4

HP = { 4,2 }

2.)
2x + 3y = -6 |×1
x - 4y = -3 |×2

2x + 3y = -6
2x - 8y = -6
_________-
11y = 0
y = 0

2x + 3y = -6
2x + 3(0) = -6
2x = -6
x = -6 ÷ 2
x = -3

HP = { -3,0 }

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