Simplifique:
a) (2/3 + 1/3) : (1/4 +2/4)
b) 2/5 . [1 . 2/3 . (3/5 - 1/3)]
c) {3/5 + [1 + (3/5 - 1/5) + 2 : 1/3] - 1}
help ;-;
a) (2/3 + 1/3) : (1/4 +2/4)
b) 2/5 . [1 . 2/3 . (3/5 - 1/3)]
c) {3/5 + [1 + (3/5 - 1/5) + 2 : 1/3] - 1}
help ;-;
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a) (2 + 1) : (1 + 2) = (3) : ( 3 ) = 3. 4 ==> 4
3 3 4 4 3 4 3 3 3
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b) 2 . [1 . 2 . (3 - 1)] = 2 . [2 . (9 - 4)] ==> 2 . [2 . 5] = 2. 10 ==> 4
5 3 5 3 5 3 15 5 3 15 5 45 45
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c) {3 + [1 + (3 - 1) + 2 : 1 ] - 1} = {3 + [1 + 2 + 2.3 ] - 1}
5 5 5 3 5 5 1
{3 + [1 + 2 + 6 ] - 1} ==> {3 + [5 + 2 + 30 ] - 1} ==> {3 + 37 - 1}
5 5 5 5 5 5
40 - 5 ==> 35 ==> 7
5 5