Znajdź liczbę, której 15% wynosi tyle, ile wartość wyrażenia
3½-1 1/6+4 ⅖:1⅕
3½-1 1/6+4 ⅖:1⅕=3 1/2-1 1/6+22/5:6/5=3 1/2 -1 1/6+22/5*5/6=
=3 3/6-1 1/6+22/6=2 2/6+3 4/6=6
6 -15%
x- 100%
x=6*100:15
x= 40
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3½-1 1/6+4 ⅖:1⅕=3 1/2-1 1/6+22/5:6/5=3 1/2 -1 1/6+22/5*5/6=
=3 3/6-1 1/6+22/6=2 2/6+3 4/6=6
6 -15%
x- 100%
x=6*100:15
x= 40