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y x 2 + y : 0,125 = 20,15
y x 2 + y x 4 = 20,15
y x ( 2 + 4 ) = 20,15
y x 8 = 20,15
y = 20,15 : 8
y = 2,51875
mk nhanh nhất k mình nhé
Y x 2 + Y x 8 = 20,15
Y x ( 2 + 8 ) = 20,15
Y x 10 = 20,15
Y = 20,15 : 10
Y = 2,015
a) y x 8 + y : 0,5 = 9,78
y x 8 + y x 2 = 9,78
y x ( 8 + 2 ) = 9,78
y x 10 = 9,78
y = 9,78 : 10
y = 0,978
b) 92 . x + x : 0,125 = 746,2
92 . x + x . 8 = 746,2
x . ( 92 + 8 ) = 746,2
x . 100 = 746,2
x = 746,2 : 100
x = 7,462
135 + y x 9 , 5 + y : 0 , 125 = 310
135 + y x 9 , 5 + y x 8 = 310
y x ( 9 , 5 + 8 ) = 310 - 135
y x 17 , 5 = 175
y = 175 : 17 , 5
y = 10
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 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
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
y x 2 + y : 0,125 = 20,15
y + 2 : 0,125 = 20,15
y + 16 = 20,15
y = 20,25 - 16
y = 4,15
sai rồi