\(\frac{x}{27}\)\(=\frac{-2}{3,6}\)
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\(\frac{x}{27}=\frac{-2}{3,6}\Rightarrow x.3,6=-2.27\Rightarrow x.3,6=-54=x.3,6\Rightarrow x=-54:3,6\Rightarrow x=x=-540:36\Rightarrow x=-15\)
\(\frac{x}{27}\)= \(\frac{-2}{3,6}\)
\(\Leftrightarrow\)\(x\cdot3,6=27\cdot-2\)
\(\Leftrightarrow\)\(x\cdot3,6=-54\)
\(\Leftrightarrow\)\(x=-\frac{54}{3,6}\)
\(\Rightarrow\)\(x=-15\)
a) \(\frac{x}{27}=\frac{-2}{3,6}\Leftrightarrow x=\frac{-2.27}{3,6}=-15\)
b) \(\frac{4\frac{1}{4}}{2\frac{7}{8}}=\frac{x}{1,61}\Leftrightarrow\frac{4,25}{2,875}=\frac{x}{1,61}\Leftrightarrow x=\frac{4,25.1,61}{2,875}=2,38\)
a) \(\frac{x}{27}=-\frac{2}{3,6}\Rightarrow x=\frac{-2.27}{3,6}=-15\)
b) \(\frac{4\frac{1}{4}}{2\frac{7}{8}}=\frac{x}{1,61}\Rightarrow\frac{\frac{17}{4}}{\frac{23}{8}}=\frac{x}{1,61}\Leftrightarrow\frac{17}{4}\cdot\frac{8}{23}=\frac{x}{1,61}\)
\(\frac{34}{23}=\frac{x}{1,61}\Rightarrow x=\frac{1,61.34}{23}=2,38\)
\(\frac{x}{27}=\frac{-2}{3,6}\)
\(\Leftrightarrow3,6x=-54\)
\(\Leftrightarrow x=-15\)
Vậy x=-15
\(x\cdot3,6=27\cdot\left(-2\right)\\ x\cdot3,6=-54\\ x=-15\)
a, ta có:27:3,6=7,5
=>-2x7,5=15
vậy x cần tìm là 15
b, -0,52:x=\(-\frac{4}{7}\)
\(\frac{-13}{25}\): x=\(\frac{-4}{7}\)
x=\(\frac{-13}{25}:\frac{-4}{7}\)
x=0,91
a)\(\frac{x}{27}=\frac{-2}{3,6}\)
=>x.3,6=27.(-2)
=>x.3,6=-54
=>x=-15
b)-0,52:x=-9,36:16,38
=>-0,52:x=-4/7
=>x=0,91
c)\(\frac{4\frac{1}{4}}{2\frac{7}{8}}=\frac{x}{1,61}\)
=>\(2\frac{7}{8}.x=4\frac{1}{4}.1,61\)
=>\(2\frac{7}{8}.x=\frac{2737}{400}\)
=>x=\(\frac{119}{50}\)
a,\(\frac{x}{27}=-\frac{2}{3,6}\)
\(\Leftrightarrow x.3,6=27.-2\)
\(\Leftrightarrow x.3,6=-54\)
\(\Leftrightarrow x=-15\)
b,\(-0,52\div x=-9,36\div16,38\)
\(\Leftrightarrow-0,52\div x=-\frac{4}{7}\)
\(\Leftrightarrow x=\frac{91}{100}\)
c,\(\frac{4\frac{1}{4}}{2\frac{7}{8}}=\frac{x}{1,61}\)
\(\Leftrightarrow\frac{4,25}{2,875}=\frac{x}{1,61}\)
\(\Leftrightarrow x.2,875=4,25.1,61\)
\(\Leftrightarrow x.2,875=6,8425\)
\(\Leftrightarrow x=2,38\)
\(\frac{x}{27}=\frac{-2}{3,6}\)
=> x = \(\frac{27.\left(-2\right)}{3,6}=-15\)
Bài làm:
\(\frac{x}{27}=\frac{-2}{3,6}\Leftrightarrow3,6x=-54\Rightarrow x=-15\)
Học tốt!!!!