Penjelasan dengan langkah-langkah:
SPLDV berCerita
4A + 3B = 2.500 |× 7| 28A + 21B = 17.500
2A + 7B = 2.900 |× 3| 6A + 21B = 8.700 –
22A = 8.800
A = 8.800
22
A = 400
2 Lusin permen A
= 2 × 12 × 400
= 2 × 4.800
Anggap x = Permen A dan y = Permen B
2x + 7y = 2.900 |×2
4x + 3y = 2.500 |×1
↓
4x + 14y = 5.800
4x + 3y = 2.500
_____________ -
11y = 3.300
y = 3.300/11
y = 300
______________________
4x + 3(300) = 2.500
4x = 2.500 - 900
4x = 1.600
x = 1.600/4
x = 400
Ditanyakan :
2 lusin permen A ?
→ 24 × 400
→ Rp9.600.00,-
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Penjelasan dengan langkah-langkah:
SPLDV berCerita
4A + 3B = 2.500 |× 7| 28A + 21B = 17.500
2A + 7B = 2.900 |× 3| 6A + 21B = 8.700 –
22A = 8.800
A = 8.800
22
A = 400
2 Lusin permen A
= 2 × 12 × 400
= 2 × 4.800
= Rp. 9.600,00 ✔
PENYELESAIAN :
Anggap x = Permen A dan y = Permen B
2x + 7y = 2.900 |×2
4x + 3y = 2.500 |×1
↓
4x + 14y = 5.800
4x + 3y = 2.500
_____________ -
11y = 3.300
y = 3.300/11
y = 300
______________________
4x + 3y = 2.500
4x + 3(300) = 2.500
4x = 2.500 - 900
4x = 1.600
x = 1.600/4
x = 400
Ditanyakan :
2 lusin permen A ?
→ 24 × 400
→ Rp9.600.00,-