[tex]x = kemasan \: kecil \\ y = kemasan \: sedang \\ z = kemasan \: besar \\ \\ a).5x + 4y + 8z = 110 \\ 6x + 4y + 10z = 132 \\ 8x +8 y + 2z = 76 \\ \\ b).6x + 4y + 10z = 132 \\ \: \: \: \: \: \: 5x + 4y + \: \: 8z = 110 \\ ..................................... - \\ \: \: \: \: \: \: \: \: \: x\: \: \: \: \: \: \: \: \: \: \: + \: \: 2z = \: \: 22 \\ \\ 5x + 4y + 8z = 110 \\ .................................. \times 2 \\ 10x + 8y + 16z = 220 \\ \: \: 8x + 8y + \: \: \: 2z = \: \: 76 \\ ................................... - \\ \: 2x \: + \: \: \: \: \: \: \: \: \: \: \: 14z = 144 \\ - - - - - - - - - - - \div 2 \\ x + 7z = 72 \\ x + 2z = 22 \\ ..................... - \\ \: \: \: \: \: \: \: \: \: \: 5z = 50 \\ z = \frac{50}{5} = 10 \\ \\ x + 2z = 22 \\ x + 2(10) = 22 \\ x + 20 = 22 \\ x = 22 - 20 \\ x = 2 \\ \\ 8x + 8y + 2z = 76 \\ 8(2) + 8y + 2(10) = 76 \\ 16 + 8y + 20 = 76 \\ 8y + 36 = 76 \\ 8y = 76 - 36 \\ 8y = 40 \\ y = \frac{40}{8} = 5 \\ \\ 5x + 8y + 2z \\ 5(2) + 8(5) + 2(10) \\ 10 + 40 + 20 \\ 70 \: kg[/tex]
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[tex]x = kemasan \: kecil \\ y = kemasan \: sedang \\ z = kemasan \: besar \\ \\ a).5x + 4y + 8z = 110 \\ 6x + 4y + 10z = 132 \\ 8x +8 y + 2z = 76 \\ \\ b).6x + 4y + 10z = 132 \\ \: \: \: \: \: \: 5x + 4y + \: \: 8z = 110 \\ ..................................... - \\ \: \: \: \: \: \: \: \: \: x\: \: \: \: \: \: \: \: \: \: \: + \: \: 2z = \: \: 22 \\ \\ 5x + 4y + 8z = 110 \\ .................................. \times 2 \\ 10x + 8y + 16z = 220 \\ \: \: 8x + 8y + \: \: \: 2z = \: \: 76 \\ ................................... - \\ \: 2x \: + \: \: \: \: \: \: \: \: \: \: \: 14z = 144 \\ - - - - - - - - - - - \div 2 \\ x + 7z = 72 \\ x + 2z = 22 \\ ..................... - \\ \: \: \: \: \: \: \: \: \: \: 5z = 50 \\ z = \frac{50}{5} = 10 \\ \\ x + 2z = 22 \\ x + 2(10) = 22 \\ x + 20 = 22 \\ x = 22 - 20 \\ x = 2 \\ \\ 8x + 8y + 2z = 76 \\ 8(2) + 8y + 2(10) = 76 \\ 16 + 8y + 20 = 76 \\ 8y + 36 = 76 \\ 8y = 76 - 36 \\ 8y = 40 \\ y = \frac{40}{8} = 5 \\ \\ 5x + 8y + 2z \\ 5(2) + 8(5) + 2(10) \\ 10 + 40 + 20 \\ 70 \: kg[/tex]