x=luas tanah seluruhnya
Luas anak ketiga=x-1/3x-1/4x
1157,5=12x-4x-3x
12
1157,5=5x
x=2778 m²
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x=luas tanah seluruhnya
Luas anak ketiga=x-1/3x-1/4x
1157,5=12x-4x-3x
12
1157,5=5x
12
x=2778 m²