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43 = 9x - 2
9x = 45
x = 5
2x = 10 cm
3x + 1 = 16 cm
4x - 3 = 17 cm
Panjang sisi terpendek = 10 cm
43 = 2x + (3x+1) + (4x-3)
43 = 9x - 2
9x = 45
x = 5