Люди ! как решить столбик 158 умножить на 76

Question

Математика: Люди ! как решить столбик 158 умножить на 76

Caflen · Accepted Answer

( A + ( 4/5 ) ) / 9

А = 2 ; 9 ; 4/9 ; 7/9 ; 23 ( 4/9 ) ; 5 ( 7/9 )

А = 2
( 2 + ( 4/5 )) / 9 = ( ( 10/5 ) + ( 4/5 ) ) / 9 = ( 14/5 ) / 9 = 14/45

А = 9
( 9 + ( 4/5 )) / 9 = (( 45 + 4 ) / 5 ) / 9 = ( 49/5 ) / 9 = 49/45 = 1 ( 4/45 )

А = 4/9
( ( 4/9 ) + ( 4/5 ) ) / 9 = ( ( 20/45 ) + ( 36/45 ) ) / 9 = ( 56/45 ) / 9 = 56/405

А = 7/9
( ( 7/9 ) + ( 4/5 ) ) / 9 = ( ( 35/45 ) + ( 36/45 ) ) / 9 = ( 71/45 ) / 9 = 71/405

A = 23 ( 4/9 )
( 23 ( 4/9 ) + ( 4/5 ) ) / 9 = ( ( 211/9 ) + ( 4/5 ) ) / 9 = (( 1055/45 ) + ( 36/45 ) ) / 9 =
= ( 1091/45 ) / 9 = 1091/405 = 2 ( 281/405 )

A = 5 ( 7/9 )
( ( 5 ( 7/9 ) + ( 4/5 ) ) / 9 = ( ( 52/9 ) + ( 4/5 ) ) / 9 = ( ( 260/45 ) + ( 36/45 ) ) / 9 =
= ( 296/45 ) / 9 = 296/405

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