Question

$(1 \frac{7}{8} x - 3 \frac{7}{12} ) \times 4 \frac{4}{5 } = 0.8$
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Answer 1

Ответ:

$(\frac{15}{8}x- \frac{43}{12})*\frac{24}{5} =\frac{4}{5} |*\frac{5}{4} \\\\(\frac{15}{8}x- \frac{43}{12})*6=1\\\\\frac{15}{4}*3x- \frac{43}{2}=1\\\\\frac{45}{4}*x+\frac{43}{2}+1\\\\\frac{45}{4}*x+\frac{90}{4}\\\\\\45*x=90\\x=2$