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\(\dfrac{1}{18}< \dfrac{x}{12}< \dfrac{y}{9}< \dfrac{1}{4}\)
\(\Leftrightarrow2< 3x< 4y< 9\)
\(\Leftrightarrow\left(x,y\right)=\left\{\left(1;1\right);\left(2;2\right)\right\}\)
Bài 2:
Chu vi hình chữ nhật:
\(\left(4\dfrac{3}{7}+2\dfrac{1}{5}\right).2=\left(\dfrac{31}{7}+\dfrac{11}{5}\right).2=\dfrac{232}{35}.2=\dfrac{464}{35}\left(m\right)\)
Diện tích hình chữ nhật:
\(4\dfrac{3}{7}.2\dfrac{1}{5}=\dfrac{31}{7}.\dfrac{11}{5}=\dfrac{341}{35}\left(m^2\right)\)
31,5 x 0,1 + xx x `3 = 7,65
3,15 + xx x 3 = 7,65
xx x 3 = 7,65 - 3,15
xx x 3 = 4,5
xx = 4,5 : 3
xx = 1,5
tick cho mik nha
`31.5xx0.1+x xx3=7.65`
`=> 3.15+x xx3=7.65`
`=> x xx3=7.65-3.15`
`=> x xx3=4.5`
`=> x=4.5:3`
`=> x=1.5`
Vậy `x=1.5`
\(3\dfrac{7}{8}\times x-2\dfrac{3}{4}=3\dfrac{6}{12}\times\dfrac{10}{8}-\dfrac{1}{3}\)
\(\dfrac{31}{8}\times x-\dfrac{11}{4}=\dfrac{7}{2}\times\dfrac{10}{8}-\dfrac{1}{3}\)
\(\dfrac{31}{8}\times x-\dfrac{11}{4}=\dfrac{35}{8}-\dfrac{1}{3}\)
\(\dfrac{31}{8}\times x=\dfrac{97}{24}+\dfrac{11}{4}\)
\(\dfrac{31}{8}\times x=6\dfrac{19}{24}\)
\(x=1\dfrac{70}{93}\)
42/12x10/8-1/3= 84/24x30/24-8/24= 315/72-8/24= 291/72
xong bạn rút gọn nha
⇒ It is claimed that the decision imposes tight restrictions on cross-border trade.
⇒ The decision was claimed to impose tight restrictions on cross-border trade.
1. A Despie -> In spite ( In spite of, Despite không đi với of )
2. C bỏ so
3. C be rebuilt ( bị động tương lai gần: is/am/are + going to be + PP )
1. I had only one dog
2. It must be hard to live on your salary
3. The boy who was injured in the accident is now in the hospital
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