giup mik voi can gap
Giai pt
a) 3✔x-5/2 - 2✔x-7/3 =✔x-1
b)✔36x-72 -15✔x-2/25 =4(5+✔x-2)
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a)-16=7-x-32=-25-x
x=-25+16=-9
b)x-25+x=x-15
2x-25=x-15
2x=x-15+25=x+10
x=10
c)14-27+13=x-3+14
0=x+11
x=-11
a, 11-(15+11)=x-(25-9)
\(\Leftrightarrow11-26=x-16\)
\(\Leftrightarrow x=-16-11+26\)
\(\Leftrightarrow x=-1\)
b, 2-x=17-(-5)
\(\Leftrightarrow2-x=22\)
\(\Leftrightarrow-x=22-2\)
\(\Leftrightarrow x=-20\)
c, x-(17-x)=x-7
\(\Leftrightarrow x-17+x=x-7\)
\(\Leftrightarrow x+x-x=-7+17\)
\(\Leftrightarrow x=10\)
Bài 1 :
a, Ta có : \(11-\left(15+11\right)=x-\left(25-9\right)\)
=> \(11-15-11-x+25-9=0\)
=> \(x=1\)
b, Ta có : \(2-x=17-\left(-5\right)\)
=> \(2-x=22\)
=> \(x=-20\)
c, Ta có : \(x-\left(17-x\right)=x-7\)
=> \(x-17+x-x+7=0\)
=> \(x=10\)
7.Write the invitation with"Would you like...?" or "Will you....?" and give the answer:
1.have some coffee.(❌)
Would you like to have sime coffee?
Ok
2.go shopping with me.(✔)
Will you go shopping with me?
That's a good ideal
3.have dinner at a restaurant.(✔)
Would you like to have dinner at a restaurant?
Ok
4.take part in a wedding party.(❌)
Will you take part in a wedding party?
Yes
5.go to the classical concert.(✔)
Will you go to the classical concert?
Ok
Giải chúp mình với.
Tìm nghiệm của pt :
|x-3|/✔x-2=x-3/✔x-2 là:
A. (3;+∞)
B.[3;+∞)
C.{3}
D.(2;+∞)
\(A,x-465=312-45\Rightarrow x-465=267\)
\(\Rightarrow x=267+465=732\)
\(B,675-x=234+15\Rightarrow675-x=249\)
\(\Rightarrow x=675-249=426\)
chucbnhokot
A, X-465=312-45
X-465=267
X=267+465
X=732
B, 657-X = 234+15
657-X=249
X=657-249
X=408
b: \(\Leftrightarrow6\sqrt{x-2}-15\cdot\dfrac{\sqrt{x-2}}{5}=20+4\sqrt{x-2}\)
\(\Leftrightarrow\sqrt{x-2}\cdot6-3\sqrt{x-2}-4\sqrt{x-2}=20\)
\(\Leftrightarrow-\sqrt{x-2}=20\)(vô lý)