2:7:1, 2:5:4, 2:5:1, 1:5:2, 1:2:5, 1:4:3, , -3, -2, -1, 1, 2, 3, , -4, -1, 2, 1, 4, -2, Yang merupakan bentuk persamaan linear tiga variabel adalah… ., 2y + y + 8 = 16, 3x + 2y = – z, x + y + 5y = 20, –4z + z – 6 = 0, x + 7x + 18 = 0, z + y= 2, Rani hendak membeli beberapa jenis buah-buahan yaitu, 5 kg buah apel, 2 kg buah jeruk dan 3 kg buah anggur dengan uang sebesar Rp 125.000,00. Ubahlah kalimat tersebut dalam bentuk persamaan matematis., 5x + 2y + 3z = 125000, 125000 + 5x + 2y + 3z =0, 5x + 2y = 125000 + 3z, 5x = 125000 + 2y + 3z, 5x + 3z = 125000 + 2y, 5x + 125000 = 3z + 2y.
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Matematika
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