Jawab:
Penjelasan dengan langkah-langkah:
4x + 2y = 30
x - 2y = 18
2y = x - 18
4x + x - 18 = 30
5x = 30 + 18
5x = 48
x = 48/5
2y = (48/5) - 18
2y = (48 - 90)/5
2y = -42/5
y = (-42/5)/2
y = -21/5
Jadi, x = 48/5 = 9 ⅗ dan y = -21/5 = -4⅕.
Himpunan penyelesaian x = 32 dan y = 7
[tex]4x + 2y = 30 |1| \: \: \: 4x + 2y = 30\\ x - 2y = 18 |4| \: \: 4x - 8y = 72 \\ - - - - - - - - - - - ( - ) \\ - 6 y= - 42 \\ y = 7 \\ \\ x - 2y = 18 \\ x - 2(7) = 18 \\ x = 18 + 14 \\ x = 32[/tex]
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Jawab:
Penjelasan dengan langkah-langkah:
4x + 2y = 30
x - 2y = 18
2y = x - 18
4x + 2y = 30
4x + x - 18 = 30
5x = 30 + 18
5x = 48
x = 48/5
2y = (48/5) - 18
2y = (48 - 90)/5
2y = -42/5
y = (-42/5)/2
y = -21/5
Jadi, x = 48/5 = 9 ⅗ dan y = -21/5 = -4⅕.
JαɯαႦαɳ
Himpunan penyelesaian x = 32 dan y = 7
Pҽɳʝҽʅαʂαɳ ԃαɳ ʅαɳɠƙαԋ-ʅαɳɠƙαԋ ʝαɯαႦαɳ
[tex]4x + 2y = 30 |1| \: \: \: 4x + 2y = 30\\ x - 2y = 18 |4| \: \: 4x - 8y = 72 \\ - - - - - - - - - - - ( - ) \\ - 6 y= - 42 \\ y = 7 \\ \\ x - 2y = 18 \\ x - 2(7) = 18 \\ x = 18 + 14 \\ x = 32[/tex]
CყႦҽɾSιɳTαɳCσʂ