Tolong dong pliss:( pers 1=x+3y+2=0 pers 2=x-3y=16. menggunakan metode substitusi.
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Tolong dong pliss:( pers 1=x+3y+2=0 pers 2=x-3y=16. menggunakan metode substitusi.
1 Jawaban
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1. Jawaban Arkan5283
x + 3y + 2 = 0
x - 3y = 16
x + 3y + 2 = 0
x + 3y = - 2
x + 3y = - 2
x - 3y = 16
________+
2x = 14
x = 14/2
x = 7
x + 3y = - 2
7 + 3y = - 2
3y = - 2 - 7
3y = - 9
y = - 9/3
y = - 3
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