Răspuns :
72 × [1 + ( 1/48 + 5/64 + 1/96) : ( 2 - 1 / 4 )]=
48 = 2⁴ x 3
64 = 2⁶
96 = 2⁵ x 3
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cmmmc al numitorilor ( 48, 64, 96) = 2⁶ x 3 = 192
= 72 × [ 1 + ( 4 / 192 + 15 / 192 + 2 / 192 ) : ( 8 / 4 - 1 / 4 ) ]=
= 72 × ( 1 + 21 / 192 × 4 / 7 ) =
= 72 × ( 16 / 16 + 1 / 16 ) =
= 72 × 17 / 16 =
= 9 × 17 / 2 =
= 153 / 2 = 76,5
48 = 2⁴ x 3
64 = 2⁶
96 = 2⁵ x 3
___________
cmmmc al numitorilor ( 48, 64, 96) = 2⁶ x 3 = 192
= 72 × [ 1 + ( 4 / 192 + 15 / 192 + 2 / 192 ) : ( 8 / 4 - 1 / 4 ) ]=
= 72 × ( 1 + 21 / 192 × 4 / 7 ) =
= 72 × ( 16 / 16 + 1 / 16 ) =
= 72 × 17 / 16 =
= 9 × 17 / 2 =
= 153 / 2 = 76,5
Obs. 48=2⁴ₓ 3
64=2⁶
96=2⁵ₓ 3
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[48;64;96]=2⁶ₓ3=192
72×[1+(1/48+5/64+1/96):(2-1/4)] =
=72 ₓ [1+(4+15+2)/192 : (7/4)] =
=72 ₓ [ 1+ 21/192 ₓ 4/7 ]=
=72 ₓ [1 + 3/48 ] =
=72 ₓ [1 + 1/16 ] = 72 ₓ 17/16 = 9 ₓ 17 / 2 = 76,5
64=2⁶
96=2⁵ₓ 3
----------------------
[48;64;96]=2⁶ₓ3=192
72×[1+(1/48+5/64+1/96):(2-1/4)] =
=72 ₓ [1+(4+15+2)/192 : (7/4)] =
=72 ₓ [ 1+ 21/192 ₓ 4/7 ]=
=72 ₓ [1 + 3/48 ] =
=72 ₓ [1 + 1/16 ] = 72 ₓ 17/16 = 9 ₓ 17 / 2 = 76,5