ADMICRO
Tìm x biết \(\begin{array}{l} - 7,5 + \frac{3}{4} + 2x = 3 \end{array}\)
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ZUNIA12
Lời giải:
Báo sai\(\begin{array}{l} - 7,5 + \frac{3}{4} + 2x = 3\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,2{\rm{x}} = 3 + 7,5 - \frac{3}{4}\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,2{\rm{x}} = 10,5 - \frac{3}{4}\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,2{\rm{x}} = \frac{{42}}{4} - \frac{3}{4}\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,2{\rm{x}} = \frac{{39}}{4}\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x = \frac{{39}}{8} \end{array}\)
ZUNIA9
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