Tìm x
( 4/5 : 6/5 + 1/5 : 1/x ) x 30 = 26 = 54
Tìm x
( 4/5 : 6/5 + 1/5 : 1/x ) x 30 -26 = 54
\(\left(\dfrac{4}{5}:\dfrac{6}{5}+\dfrac{1}{5}:\dfrac{1}{x}\right)\times30-26=54\)
\(\left(\dfrac{4}{5}\times\dfrac{5}{6}+\dfrac{1}{5}\times x\right)\times30=54+26\)
\(\left(\dfrac{4}{6}+\dfrac{1}{5}\times x\right)\times30=80\)
\(\dfrac{4}{6}+\dfrac{1}{5}\times x=\dfrac{8}{3}\)
\(\dfrac{1}{5}\times x=\dfrac{8}{3}-\dfrac{4}{6}\)
\(\dfrac{1}{5}\times x=2\)
\(x=2:\dfrac{1}{5}\)
\(x=2\times5\)
\(x=10\)
Tìm x
(4/6 : 6/5 + 1/5 : 1/X) x 30 - 26 = 54
1.tìm x
(4/5:6/5+1/5:1/y)*30-26=54
(4/5 : 6/5 + 1/5 :1/x) X 30 - 26= 54
(4/5 : 6/5 + 1/5 : 1/x) * 30 - 26 = 54
\(\Leftrightarrow\)\(\left(\frac{2}{3}+\frac{x}{5}\right)\)\(\times30-26=54\)
\(\Leftrightarrow20+6x\)\(-26=54\)
\(\Leftrightarrow6x=54+26-20\)
\(\Leftrightarrow6x=60\)
\(\Leftrightarrow x=10\)
Học tốt!
\(\left(\frac{4}{5}:\frac{6}{5}+\frac{1}{5}:\frac{1}{x}\right)\cdot30-26=54\)
\(\left(\frac{4}{5}\cdot\frac{5}{6}+\frac{1}{5}\cdot x\right)\cdot30=54+26\)
\(\left(\frac{2}{3}+\frac{x}{5}\right)\cdot30=80\)
\(\frac{2}{3}+\frac{x}{5}=80:30\)
\(\frac{2}{3}+\frac{x}{5}=\frac{8}{3}\)
\(\frac{x}{5}=\frac{8}{3}-\frac{2}{3}\)
\(\frac{x}{5}=2\)
\(x=10\)
\(x=10\)\(nha\)
\(HOK\)\(T~\)
y + y x y x 1/3 : 2/9 + y : 2/7 = 252
(4/5 : 6/5 + 1/5 : 1/y) x 30 - 26 += 54
(4/5 : 6/5 + 1/5 : 1/x) * 30 - 26 = 54
ai đó biết làm ơn chỉ mình cái đang vội
\(\left(\frac{4}{5}:\frac{6}{5}+\frac{1}{5}:\frac{1}{x}\right)\cdot30-26=54\)
\(\left(\frac{2}{3}+\frac{x}{5}\right)\cdot30=54\cdot26\)
\(\left(\frac{2}{3}+\frac{x}{5}\right)\cdot30=1404\)
\(\frac{2}{3}+\frac{x}{5}=1404:30\)
\(\frac{2}{3}+\frac{x}{5}=\frac{234}{5}\)
\(\frac{x}{5}=\frac{234}{5}-\frac{2}{3}\)
\(\frac{x}{5}=\frac{692}{15}\)
\(x=\frac{692}{15}\cdot5\)
\(x=\frac{692}{3}\)
\(\left(\frac{4}{5}:\frac{6}{5}+\frac{1}{5}:\frac{1}{x}\right)\times30-26=54\)
\(\Leftrightarrow\left(\frac{4}{5}\times\frac{5}{6}+\frac{1}{5}\times x\right)\times30=80\)
\(\Leftrightarrow\frac{2}{3}+\frac{1}{5}\times x=\frac{8}{3}\)
\(\Leftrightarrow\frac{1}{5}\times x=2\)
\(\Leftrightarrow x=2:\frac{1}{5}\)
\(\Leftrightarrow x=2\times5\)
\(\Leftrightarrow x=10\)
Vậy x = 10.
Matcha
\(\left(\frac{4}{5}\div\frac{6}{5}+\frac{1}{5}\div\frac{1}{x}\right)\times30-26=54\)
\(\Leftrightarrow\left(\frac{4}{5}\times\frac{5}{6}+\frac{1}{5}\times\frac{x}{1}\right)\times30=80\)
\(\Leftrightarrow\frac{2}{3}+\frac{x}{5}=\frac{8}{3}\)
\(\Leftrightarrow\frac{x}{5}=2\)
\(\Leftrightarrow x=10\)
Vậy\(x=10\)
1) ( 4/5 : 6/5 + 1/5 : 1/\(x\)) x 30 - 26 = 54
2) 6,3 x y + 3,7 x y = 100
3) 7,75 - ( 0,5 x y : 5 – 6,2 ) = 1,75
4) (8/5 - 1/2 x \(x\)/5 ) :1/5 = 4
5) (\(x\)- 1/2 ) x 5/3 = 7/4 - 1/2
(\(\dfrac{4}{5}\): \(\dfrac{6}{5}\)+ \(\dfrac{1}{5}\):\(\dfrac{1}{x}\)) .30 - 26 =54
\(\Leftrightarrow\left(\dfrac{2}{3}+\dfrac{x}{5}\right)\cdot30=80\)
=>1/5x+2/3=8/3
=>1/5x=2
hay x=10