Răspuns:
20
Explicație:
[1,2 + 1,(3) · 3/20] : 0,14 · 2 =
[1,2 + 13 - 1/9 · 3/20] : 0,14 · 2 =
(6/5 + 12/3 · 1/20) ÷ 7/50 · 2 =
(6/5 + 3/5 · 1/5) · 50/7 · 2 =
(6/5 + 1/5) · 50/7 · 2 =
7/5 · 50/7 · 2 =
1/5 · 50 · 2 =
10 · 2 =
20.
________
1,(3) = 13 - 1 / 9 = 12/9
1.2 = 12/10 = 6/5
0,14 = 14/100 = 7/50
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