Tìm y:
a,486:y-126:y=6
b,y×70=42000:60
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a: =>y-1,57=3,42
hay y=4,99
c: =>y=1,2:1,7+0,01=1217/1700
\(486:y-126:y=6\)
\(\Leftrightarrow\left(486-126\right):y=6\)
\(\Leftrightarrow360:y=6\)
\(\Leftrightarrow y=360:6\)
\(\Leftrightarrow y=60\)
Đáp số : 60
486 : y - 126 : y = 6
( 486 - 126 ) : y = 6
360 : y = 6
y = 360 : 6
y = 60
:D
486 : y - 126 : y = 6
[ 486 - 126 ] : y = 6
360 : y = 6
y = 360 : 6
y = 60
Suy ra số đó là 60
k mình mình k lại
486:Y-126:Y=6
=> 486.1/Y-126.1/Y=6
=>1/Y(486-126)=6
=>1/Y . 360=6
=> 1/Y=6:360
=>1/Y=1/60
=>Y=60
a) 162 : 𝑥 + 216 : 𝑥 = 6
(162 + 216) : x = 6
378 : x = 6
x = 378 : 6
x = 63
b) 602 : x + 123 x 2 = 253
602 : x + 246 = 253
602 : x = 253 - 246
602 : x = 7
x = 602 : 7
x = 86
c) 486 : x - 126 :x = 6
(486-126) : x = 6
360 : x = 6
x = 360 : 6
x = 60
d) 725 : x + 175 : x = 5
(725 + 175) : x = 5
900 : x = 5
x = 900 : 5
x = 180
a)\(162:x+216:x=6\)
⇔\(\left(162+216\right):x=6\)
⇔\(378:x=6\)
⇔\(x=63\)
b)\(602:x+123.2=253\)
⇔\(602:x+246=253\)
⇔\(602:x=7\)
⇔\(x=86\)
c)\(486:x-126:x=6\)
⇔\(\left(486-126\right):x=6\)
⇔\(360:x=6\)
⇔\(x=60\)
d)\(725:x+175:x=5\)
⇔\(\left(725+175\right):x=5\)
⇔\(900:x=5\)
⇔\(x=180\)
\(a.162:x+216:x=6\) \(b.602:x+123x2=253\)
\(\left(162+216\right):x=6\) \(602:x+246=253\)
\(378:x=6\) \(602:x=253-246\)
\(x=378:6=63\) \(602:x=7\)
\(x=602:7=86\)
\(c.486:x-126:x=6\) \(d.725:x+175:x=5\)
\(\left(486-126\right):x=6\) \(\left(725+175\right):x=5\)
\(360:x=6\) \(900:x=5\)
\(x=360:6=60\) \(x=900:5=180\)
a) y=1,8:0,75=2,4
b) y=0,483:0,15=3,22
c) y=2,7+(3,48:1,45)=5,1
d) y=(0,125+0,5):0,25=0,7
\(a,y\times2,8+5,2\times y=48\\ y\times\left(2,8+5,2\right)=48\\ y\times8=48\\ y=\dfrac{48}{8}=6\\ ---\\ b,y\times12,25-y+y\times2,75=1050\\ y\times\left(12,25-1+2,75\right)=1050\\ y\times14=1050\\ y=\dfrac{1050}{14}=75\)
a: \(y\cdot2,8+y\cdot5,2=48\)
=>\(y\left(2,8+5,2\right)=48\)
=>\(8y=48\)
=>\(y=\dfrac{48}{8}=6\)
b: \(y\cdot12,25-y+y\cdot2,75=1050\)
=>\(y\left(12,25-1+2,75\right)=1050\)
=>\(y\cdot14=1050\)
=>\(y=\dfrac{1050}{14}=75\)
486 : y - 126 : y = 6
( 486 - 126 ) : y = 6
360 : y = 6
=> y = 360 : 6
y= 60
b, y x 70 = 42000 : 60
y x 70 = 700
y = 700 : 70
y = 10
a)
\(486:y-126:y=6\)
\(\left(486-126\right):y=6\)
\(360:y=6\)
\(y=360:6\)
Vậy \(y=60\)
b)
\(y\times70=42000:60\)
\(y=\frac{42000:60}{70}\)
Vậy \(y=10\)
nha