\(=\frac{1885}{952}-2.2=\frac{1885}{952}-4=\frac{-1923}{952}\)
\(\frac{45}{56}+\frac{100}{85}-\frac{2}{1}\cdot2\)
\(=\frac{3825+5600}{4760}-2.2\)
\(=\frac{9425}{4760}-4\)
\(=\frac{1885}{952}-4\)
\(=\frac{1885-4.952}{952}\)
\(=\frac{-1923}{952}\)
Tíck cho mìk vs nhé Wendy Marvell!