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a) (y - 24) : 28 = 20
y - 24 = 20 x 28
y - 24 = 560
y = 560 + 24
y = 584
vậy y = ...
a.
\(\left(y-24\right):28=20\)
\(\left(y-24\right)=560\)
\(y=584\)
b. \(13\times\left(y-6\right)=4\times y-6\)
\(13\times y-78=4\times y-6\)
\(9\times y=72\)
\(y=8\)
c.\(y\times3+y\times4+y:3+y:4=182\)
\(y\times\left(3+4\right)+y:\left(3+4\right)=182\)
\(y\times\left(7+\dfrac{1}{7}\right)=182\)
\(y=\dfrac{637}{25}\)
\(\frac{4y}{3}+\frac{2y}{3}+8y=150\)
\(\frac{6y}{3}+8y=150\)
\(2y+8y=150\)
\(10y=150\)
\(y=15\)
vậy \(y=15\)
y x (4/3+2/3+8)=150
y x 10 = 150
y = 150 : 10 = 15
k mk nha
y : 3 . 4 + y : 3 . 2 + y . 8 = 150
4/3y + 2/3y + 8y = 150
10y = 150
y = 150 : 10
y = 15
y : 3 x 4 + y : 3 x 2 + y x 8 = 150
y x 1/12 + y x 1/6 + y x 8 = 150
y x ( 1/12 + 1/6 + 8 ) = 150
y x 8.25 = 150
y = 150 : 8.25
y = 18,(18)
y x 10 - y x \(\frac{1}{4}\)- y x\(\frac{3}{4}\)= 1,25
y x (10 - \(\frac{1}{4}\)- \(\frac{3}{4}\)) = 1,25
y x 9 = 1,25
y = 1,25 : 9
y = \(\frac{5}{36}\)
y x 5 + y x 4 + y x 3 + y x 88 = 419,824
y x ( 5 + 4 + 3 + 88 ) = 419,824
y x 100 = 419,824
y = 419,824 : 100
y = 4,19824
Vậy y = 4,19824
\(y\times3+y\times4+y:3+y:4=182\\ y\times3+y\times4+y\times\dfrac{1}{3}+y\times\dfrac{1}{4}=182\\ y\times\left(3+4+\dfrac{1}{3}+\dfrac{1}{4}\right)=182\\ y\times\dfrac{91}{12}=182\\ y=182:\dfrac{91}{12}\\ y=24\)
`yxx3+yxx4+y:3+y:4=182`
`yxx3+yxx4+yx 1/3+yx1/4=182`
`yxx(3+4+1/3+1/4)=182`
`yxx 91/12=182`
`y=182: 91/12`
`y=182xx12/91`
`y=24`
Vậy `y=24`