Среднее арифметическое двух чисел равно 7,2.одно число в 1,4 раза меньше другого. найдите меньшее число.
maks2324
3
26.07.2019 23:10
9
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2
(х+1,4х)/2=7,2
2,4х=7,2*2=14,4
х=6