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\(\left(y-5\right)-\left(y-5\right)+y\cdot5-y:5=5\)
=>\(5y-0,2y=5\)
=>4,8y=5
=>\(y=\dfrac{25}{24}\)
\(y\text{×}5+y:0,25=81\)
\(y\text{×}5+y\text{×}4=81\)
\(y\text{×}\left(5+4\right)=81\)
\(y\text{×}9=81\)
\(y=81:9\)
\(y=9\)
\(y\text{×}3+y:0,2=64\)
\(y\text{×}3+y\text{×}5=64\)
\(y\text{×}\left(3+5\right)=64\)
\(y\text{×}8=64\)
\(y=64:8\)
\(y=8\)
y.5 + y : 1/2 + y : 1/3
= y.5 + y.2 + y.3
= y.(5 + 2 + 3)
= y.10
4/11 x y - 6/11 = 2/5
4/11 x y = 2/5+6/11
4/11 x y = 52/55
y = 52/55 : 4/11
y = 13/5
4/11xy-6/11=2/5
=>4/11xy=2/5+6/11
=>4/11xy=52/55
=>y=52/55:4/11
=>y=13/5
1,2210 / 0,01 = 122,1
40,95 / 1,5 - 6,17 = 27,3 - 6,17 = 21,13
1,2210 : 0,01 = 122.1
=40.95 :1.5 -6,17
= 27.3 - 6.17
= 21.13
\(\frac{9}{4}-y.\frac{5}{6}=\frac{1}{2}+\frac{1}{3}\)
\(\frac{9}{4}-y.\frac{5}{6}=\frac{5}{6}\)
\(y.\frac{5}{6}=\frac{9}{4}-\frac{5}{6}\)
\(y.\frac{5}{6}=\frac{17}{12}\)
\(y=\frac{17}{12}:\frac{5}{6}\)
\(y=\frac{17}{10}\)
\(\frac{9}{4}\)- y x \(\frac{5}{6}\)= \(\frac{1}{2}\)+ \(\frac{2}{3}\) = \(\frac{9}{4}\)- \(\frac{1}{2}\)- \(\frac{2}{3}\)= y x \(\frac{5}{6}\)
y x \(\frac{5}{6}\)= \(\frac{13}{12}\)
y = \(\frac{13}{12}\)x \(\frac{6}{5}\)= \(\frac{13}{10}\)
\(11\times y+y:25\%+y\times5-5=1,5:0,01\)
\(11\times y+y:25\%+y\times5=150+5\)
\(11\times y+y:25\%+y\times5=155\)
\(11\times y+y\times4+y\times5=155\)
\(y\times\left(11+4+5\right)=155\)
\(y\times20=155\)
\(y=155:20\)
\(y=7,75\)
Vậy \(y=7,75\)
\(Ng\)
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