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SPLDV

3x – 2y = -1

-x + y = -3 ===> y = x – 3

Pembahasan

Subtitusi nilau y = x – 3

3x – 2y = -1

3x – 2(x-3) = -1

3x – 2x + 6 = -1

x = -7

Subtitusi nilai x = -7

-x + y = -3

-(-7) + y = -3

7 + y = -3

y = -10

Jadi nilai x = –7 dan y = –10