Question

Exercitiul 5 va rog sa ma ajutati repede
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Answer 1

Răspuns:   4/5

Explicație pas cu pas:

[ ( a × 3/2 - 1/3) : 13/5 - 1/4 ] × 3 + 7/4 = 2

[ ( a × 3/2 - 1/3) : 13/5 - 1/4 ] × 3 = 2 - 7/4 = ( 8 -7)/4

[ ( a × 3/2 - 1/3) : 13/5 - 1/4 ] × 3 = 1/4

( a × 3/2 - 1/3) : 13/5 - 1/4 = 1/4  : 3 = ( 1/4)×(1/3)

( a × 3/2 - 1/3) : 13/5 - 1/4 = 1/12

( a × 3/2 - 1/3) : 13/5 = 1/12 + 1/4 = (1+3)/12 = 4/12

( a × 3/2 - 1/3) : 13/5 = (1/3)  × 13/5

a × 3/2 - 1/3 = 13/15

a × 3/2 = 13/15 + 1/3 = ( 13+5)/15

a × 3/2 = 18/15

a = (18/15) : 3/2

a = ( 18/15) × ( 2/3 )

a = 36/45

a = 4/5