Jawaban:
x = -11 dan y = 24
sehingga x + y = -11 + 24 = 13
Penjelasan dengan langkah-langkah:
-x + 2y = 59 ....(1)
2x - y = -46 ....(2)
1. eliminasi x
-x + 2y = 59 (×2) = -2x + 4y = 118
2x - y = -46
-2x + 4y = 118
——————— +
3y = 72
y = 72/3
y = 24
2. substitusi nilai y ke dalam persaamaan 1
-x + 2y = 59
-x + 2(24) = 59
-x + 48 = 59
-x = 59 - 48
-x = 11
x = -11
semoga membantu
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Jawaban:
x = -11 dan y = 24
sehingga x + y = -11 + 24 = 13
Penjelasan dengan langkah-langkah:
-x + 2y = 59 ....(1)
2x - y = -46 ....(2)
1. eliminasi x
-x + 2y = 59 (×2) = -2x + 4y = 118
2x - y = -46
-2x + 4y = 118
2x - y = -46
——————— +
3y = 72
y = 72/3
y = 24
2. substitusi nilai y ke dalam persaamaan 1
-x + 2y = 59
-x + 2(24) = 59
-x + 48 = 59
-x = 59 - 48
-x = 11
x = -11
semoga membantu