ADMICRO
Tìm x biết \(\begin{array}{l} - 1,25 + \frac{2}{{15}} - 2x = 2 \end{array}\)
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ZUNIA12
Lời giải:
Báo sai\(\begin{array}{l} - 1,25 + \frac{2}{{15}} - 2x = 2\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,2x = - 1,25 + \frac{2}{{15}} - 2\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,2x = - 3 - \frac{1}{4} + \frac{2}{{15}}\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,2x = - 3 - \frac{7}{{60}}\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,2x = \frac{{ - 187}}{{60}}\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x = \frac{{ - 187}}{{60}}:2 = \frac{{ - 187}}{{120}} \end{array}\)
ZUNIA9
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