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calculeaza
a)3/4:(3/4-1/2)-4/9=



Răspuns :

3/4 : (3/4 - 1/2) - 4/9 =

= 3/4 : (3/4 - 2/4) - 4/9 =

= 3/4 : 1/4 - 4/9 =

= 3/4 × 4 - 4/9 =

= 12/4 - 4/9 =

= 3 - 4/9 =

= (27 - 4)/9 =

= 23/9
3/4÷(3/4-1/2)-4/9=
3/4÷(3/4-2/4)-4/9=
3/4÷1/4-4/9=
3/4×4-4/9 =
12/4-4/9 =
3-4/9=
(27-4)/9=
23/9