Jawaban:
himpunan penyelesaian dari sistem persamaan 2x + 2y = 4 dan 3x + y = 6 adalah ...
2x + 2y = 4 ... (i)
3x + y = 6
y = 6 - 3x ... (ii)
2x + 2y = 4
2x + 2(6 - 3x) = 4
2x + 12 - 6x = 4
2x - 6x + 12 = 4
-4x + 12 = 4
-4x = 4 - 12
-4x = -8
x = -8/-4
x = 2
y = 6 - 3x
y = 6 - 3(2)
y = 6 - 6
y = 0
Himpunan penyelesaian HP = {2, 0}
'조슈아' (Svt)
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Jawaban:
Penyelesaian :
himpunan penyelesaian dari sistem persamaan 2x + 2y = 4 dan 3x + y = 6 adalah ...
Metode substitusi
2x + 2y = 4 ... (i)
3x + y = 6
y = 6 - 3x ... (ii)
2x + 2y = 4
2x + 2(6 - 3x) = 4
2x + 12 - 6x = 4
2x - 6x + 12 = 4
-4x + 12 = 4
-4x = 4 - 12
-4x = -8
x = -8/-4
x = 2
y = 6 - 3x
y = 6 - 3(2)
y = 6 - 6
y = 0
Himpunan penyelesaian HP = {2, 0}
'조슈아' (Svt)