80 এর 20% + 2x = 30 এর 45% + 85 এর 20% রাশিতে x এর মান নির্ণয় করুন।

1
\(7\frac{1}{4}\)
2
\(7\frac{3}{4}\)
3
\(7\frac{1}{2}\)
4
\(7\frac{1}{3}\)

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