18x12x61/12X12+3x12=

[tex]\frac{18*12*61}{12}*12+(3*12) = 13212[/tex]

18 × 12 × 61/12 × 12 + 3 ×12 = 13.212
Caranya:
=18×61×12+3×12
=12(18×61+3)
=12×1.101
=13.212

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