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58 = 2((3x-2)+(2x+1))
58/2 = 5x-1
29 = 5x - 1
29 +1 = 5x
30=5x
X = 6
maka lebar persegi panjang adalah
2x + 1
=2(6) + 1
=12 + 1
=13
58 = 2 (3x-2 + 2x+1)
58 = 2 (5x - 1)
58 = 10x -2
60 = 10x
6 = x
--> lebar = 2x+1, maka :
2(6) + 1 = 13