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18 x y- y : 0,125 +y x 0,5 - 2 x y x 0,15 =18
18 x y - y x 8 + y x 0,5 - y x 0,3 =18
y x (18-8+0,5-0,3)=18
y x 10,2=18
y= \(\frac{30}{17}\)
\(18\times y-y:0,125+y\times0,5-2\times y\times0,15=18\)
\(\Rightarrow18\times y-y\times8+y\times\frac{5}{10}-2\times y\times0,15=18\)
\(\Rightarrow18\times y-y\times8+y\times\frac{1}{2}-2\times y\times\frac{15}{10}=18\)
\(\Rightarrow18\times y-y\times8+y\times2-2\times y\times\frac{3}{2}=18\)
Tự tìm nhé
yx110-y:0,125-y:0,5=5,702
yx110-yx8-yx2 =5,702
yx(110-8-2) =5,702
yx100 =5,702
y =5,702:100
y =0,05702
\(y\times110-y:0,125-y:0,5=5,702\)
\(y\times110-y\times8-y\times2=5,702\)
\(y\times\left(110-8-2\right)=5,702\)
\(y\times100=5,702\)
\(y=5,702:100\)
\(y=0,05702\)
Vậy...............
\(y+y\div0.25+y\div0,125+y\times2=15\)
\(y\times1+y\times4+y\times8+y\times2=15\)
\(y\times\left(1+4+8+2\right)=15\)
\(y\times15=15\)
\(y=15\div15\)
\(y=1\)
y + y : 0,25 + y : 0,125 + y x 2 = 15
y x 1 + y x 4 + y x 8 + y x 2 = 15
y x (1+4+8+2) = 15
y x 15 = 15
y = 15 : 15
y = 1
y x 110 - y : 0,125 - y : 0,5 = 5,702
=>y x 110 - y x 8 - y x 2 = 5,702
=>y x ( 100 - 8 - 2 )= 5,702
=>y x 100 = 5,702
=> y = 5,702 : 100
=> y =0,05702
Vậy y = 0,05702
HOK TỐT
Ta có:
\(y\times110-y:0,125-y:0,5=5,702\)
\(\Leftrightarrow y\times110-y:\frac{1}{8}-y:\frac{1}{2}=5,702\)
\(\Leftrightarrow y\times110-y\times8-y\times2=5,702\)
\(\Rightarrow y\times\left(110-8-2\right)=5,702\)
\(\Rightarrow y\times100=5,702\)
\(\Rightarrow y=\frac{5,702}{100}\)
\(\Rightarrow y=0,05702\)
Vậy \(y=0,05702\)
#tippiecat
y : 0,25 + y : 0,125 - y x 2 = 58,42
y x 4 + y x 8 - y x 2 = 58,42
y x (4+8-2)=58,42
y x 10 = 58,42
y = 58,42 : 10
y = 5,842
y + y : 0,5 + y : 0,25 + y : 0,125
= y : ( 0,5 + 0,25 + 0,125 )
= y : 0,825
y + y : 0, 5 + y : 0 , 25 + y : 0 , 125
= y + y x 2 + y x 4 + y x 8
= y x ( 1 + 2 + 4 + 8 )
= y x 15
Tk mk nha !!!
\(60\%\cdot y+y:0,125+y\cdot11,4=60,7\)
=>\(0,6\cdot y+y\cdot8+y\cdot11,4=60,7\)
=>\(y\left(0,6+11,4+8\right)=60,7\)
=>\(y\cdot20=60,7\)
=>\(y=\dfrac{60,7}{20}=3,035\)
\(60\%.y+y:0,125+y.11,4=60,7\)
\(=>0,6.y+y\cdot8+y\cdot11,4=60,7\\ =>y.\left(0,6+11,4+8\right)=60,7\)
\(=>y.20=60,7\\ =>y=60,7:20\\ =>y=3,035\)