(2-1/2)(3-1/3)(4-1/4):15=
=(4/2-1/2)(9/3-1/3)(16/4-1/4):15=
=3/2×8/3×15/4:15=
=4×15/4:15=
=15:15=1
Răspuns:
Explicație pas cu pas:
2 - 1/2 = 4/2 - 1/2 = 3/2
3 - 1/3 = 9/3 - 1/3 = 8/3
4 - 1/4 = 16/4 - 1/4 = 15/4
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3/2*8/3*15/4 = 3*8*15/2*3*4 = 24*15/24 = 15
____________
15 : 15 = 1
