Разность двух чисел равна 5. найдите эти числа, если 2/9 меньшего из них равны 1/5 большего
Дишka
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19.09.2019 20:40
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3
2x/9=y/5
x-y=5
10x/9=y
x-(10x/9)=5
10x/9=y
9x-10x=45
10x/9=y
x=-45
y=-50