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1/4:[5/4-2/3x (1,5-0,75)]

Răspuns :

1/4:[5/4-2/3x (1,5-0,75)] =

1/4:[5/4-2/3x (0,75)] =
dar 0,75=75/100=15/20=3/4

1/4:[5/4-2/3x 3/4] =

1/4:(5/4-1/2) =

1/4:(5/4-2/4) =

1/4:3/4 =

1/4×4/3 =1/3

1/4:[5/4-2/3x (1,5-0,75)] =1/3