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50=2(3x+5+x+2)
50=2(4x+7)
50=8x+14
50-14=8x
36=8x
36/8=x
4,5=x
50 m= 2(3x + 5 + x + 2)
50m : 2 = 4x + 7
25 m - 7 = 4x
18 = 4x
x = 18 : 4
x = 4,5 meter
Panjang = 3x + 5
= 3(4,5 meter) + 5
= 18,5 meter
Lebar = x + 2
= 4,5 meter + 2
= 6,5 meter