[( 4/5 + 3/10) : 9/2 - 1/15] × 15/4 + 1/2=
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aplificam cu 2
(11 / 10 : 9/2 - 1/15) ×15/4 + 1/2=
(11/10 × 2/9 - 1/15)×15/4 + 1/2=
(11/45 - 1/15) ×15/4 + 1/2=
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Aplificam cu 3
(11/45 - 3/45) ×15/4 + 1/2=
8/45 ×15/4 +1/2=
2/3 + 1/2 =
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Aplificam cu 2 si 3
4/6 + 3/6=
7/6
Succes =)
