Respuesta:
396 / 28
Explicación paso a paso:
20 / 4
= 5
= 5 / 1
= ( 5 / 1 ) x ( 28 / 28 )
= ( 5 x 28 ) / ( 1 x 28 )
= 140 / 28
5 / 2
= ( 5 / 2 ) x ( 14 / 14 )
= ( 5 x 14 ) / ( 2 x 14 )
= 70 / 28
36 / 8
= 9 / 2
= ( 9 / 2 ) x ( 14 / 14 )
= ( 9 x 14 ) / ( 2 x 14 )
= 126 / 28
15 / 7
= ( 15 / 7 ) x ( 4 / 4 )
= ( 15 x 4 ) / ( 7 x 4 )
= 60 / 28
20 / 4 + 5 / 2 + 36 / 8 + 15 / 7
= 140 / 28 + 70 / 28 + 126 / 28 + 60 / 28
= ( 140 + 70 + 126 + 60 ) / 28
= 396 / 28
