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125 \(\times\) y - 12 \(\times\)y - 13 \(\times\) y = 5208000
y \(\times\)( 125 - 12 - 13) = 5208000
y \(\times\) 100 = 52008000
y = 5208000 : 100
y = 52080
`1716:y=12xx13`
`1716:y=156`
`y=1716:156`
`y=11`
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`y xx 2/3+y xx 1/6=10/3`
`y xx(2/3+1/6)=10/3`
`y xx(4/6+1/6)=10/3`
`y xx5/6=10/3`
`y=10/3:5/6`
`y=10/3xx6/5=4`
1716 : y = 12 \(\times\) 13
1716 : y = 156
y = 1716 : 156
y = 11
\(y\times\dfrac{2}{3}+y\times\dfrac{1}{6}=\dfrac{10}{3}\)
\(y\times\left(\dfrac{2}{3}+\dfrac{1}{6}\right)=\dfrac{10}{3}\)
\(y\times\dfrac{5}{6}=\dfrac{10}{3}\)
\(y=\dfrac{10}{3}:\dfrac{5}{6}\)
\(y=4\)
125 \(\times\) y - 12 \(\times\) y - 13 \(\times\) y = 5208000
y \(\times\) ( 125 - 12 - 13) = 5208000
y \(\times\) 100 = 5 208 000
y = 5 208 000 : 100
y = 52 080
125.y-12.y-13.y=5208000
(125-12-13).y=5208000
100.y=5208000
y=5208000:100
y=52080
\(y\times\frac{3}{5}+y\times\frac{2}{7}=\frac{31}{70}\)
\(\Leftrightarrow y\times\left(\frac{3}{5}+\frac{2}{7}\right)=\frac{31}{70}\)
\(\Leftrightarrow y\times\frac{31}{35}=\frac{31}{70}\)
\(\Leftrightarrow y=\frac{1}{2}\)
yx12+yx13-y=4872
yx(12+13-1)=4872
yx24=4872
y=4872:24
y=203
vay y=203
y x 12 + y x 13 - y = 48,72
y x ( 12 + 13 - 1 ) = 48,72
y x 24 = 48,72
y = 48,72 : 24
y = 2,03