a. 252/y = 84/5
b. y-2/255 = 38/51
ai nhanh tui k
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\(a,\frac{252}{y}=\frac{84}{5}\)
=> \(y\cdot84=252\cdot5\)
\(y\cdot84\) \(=1260\)
\(y=1260:84\)
\(y=15\)
\(\frac{252}{y}=\frac{84}{5}\)
\(\Rightarrow y\cdot84=252\cdot5\)
\(y\cdot84=1260\)
\(y=1260:84\)
\(y=15\)
\(y-\frac{2}{252}=\frac{38}{51}\)
\(y-\frac{1}{126}=\frac{38}{51}\)
\(y=\frac{38}{51}+\frac{1}{126}\)
\(y=\frac{1613}{2142}\)
There/ a lot of/ cheese/ table/.
- There are a lot of chese in the table
He/ not have/ many friends/.
- He does not have many friends
-There are a lot of cheese on the table.
-He does not have many friends.
*19,96+4,19-24,15:(1/4-1/4) *252/x=84/97
=19,96+4,19-24,15:0 x=252x97:84
=19,96+4,19-0 x=291
=24,15-0 * x-2/255=114/153
=24,15 x-2/255=38/51
x=38/51+2/255
x=64/85
a ) ko rõ đề
b )\(\frac{252}{x}=\frac{84}{97}\)
=> 252 . 97 = x . 84
=> x . 84 = 24 444
x = 24 444 : 84
x = 291
Vậy x = 291
c ) x - \(\frac{2}{255}=\frac{114}{153}\)
x = 114/153 + 2/255
x = 64/85
Vậy x = 64/85
Is Peter doing a cartwheel in his room?
What are the children doing at the moment?
Linn is taking a photo of her father.
\(\frac{252}{y}=\frac{84}{5}\)ta có tử số : 252 : 84 = 3 | tức là Ps\(\frac{84}{5}=\frac{84\times3}{5\times3}=\frac{252}{15}\left(y=15\right)\)
\(y-\frac{2}{255}=\frac{38}{51}\)
\(y=\frac{38}{51}-\frac{2}{255}=\frac{188}{255}\)