Tentukan nilai x dan y dari x y 2 dan 2x y 1 dengan metode subtitusi

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SPLDV

x + y = 2 ==> x = 2-y

2x – y = 1

Subtitusi nilai x

2x – y = 1

2(2-y) – y = 1

4 – 2y – y = 1

-3y = -3

y = 1

Subtitusi nilai y

x + y = 2

x + 1 = 2

x = 1

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