=>x+4-|x-1|=x+1
=>4-|x-1|=1
=>|x-1|=3
=>x-1=3 hoặc x-1=-3
=>x=4 hoặc x=-2
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Các câu hỏi tương tự
1: rút gọn rồi tính
left(-dfrac{72}{40}-dfrac{144}{60}-2dfrac{1}{3}right) : left(dfrac{45}{100}-dfrac{25}{60}+-dfrac{75}{25}right)
2: tìm x: 3cdotleft(4-xright)+left(x+2right)cdotleft(1+2xright)7cdotleft(1+xright)-2xcdotleft(2-xright)
3: tìm x: dfrac{2cdotleft(1+xright)}{3}-dfrac{5cdotleft(2-xright)}{6}1dfrac{1}{3}-dfrac{3cdotleft(2x+3right)}{4}-1dfrac{1}{2}cdotleft(x+1right)
4: cho a 3+3^{2^3}+3^3+3^4+...+3^{360}
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1: rút gọn rồi tính
\(\left(-\dfrac{72}{40}-\dfrac{144}{60}-2\dfrac{1}{3}\right)\) : \(\left(\dfrac{45}{100}-\dfrac{25}{60}+-\dfrac{75}{25}\right)\)
2: tìm x: \(3\cdot\left(4-x\right)+\left(x+2\right)\cdot\left(1+2x\right)=7\cdot\left(1+x\right)-2x\cdot\left(2-x\right)\)
3: tìm x: \(\dfrac{2\cdot\left(1+x\right)}{3}-\dfrac{5\cdot\left(2-x\right)}{6}=1\dfrac{1}{3}-\dfrac{3\cdot\left(2x+3\right)}{4}-1\dfrac{1}{2}\cdot\left(x+1\right)\)
4: cho a= \(3+3^{2^3}+3^3+3^4+...+3^{360}\)
Tìm x biết :a) 3+2^{x-1}24-left[4^2-left(2^2-1right)right]b) left(x+1right)+left(x+2right)+left(x+3right)+...............+left(x+100right)205550c) left|x-5right|18+2.left(-8right)d) left(3.x-2^4right).7^52.7^6.frac{1}{2009^0}
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Tìm x biết :\(a\)) \(3+2^{x-1}=24-\left[4^2-\left(2^2-1\right)\right]\)\(b\)) \(\left(x+1\right)+\left(x+2\right)+\left(x+3\right)+...............+\left(x+100\right)=205550\)\(c\)) \(\left|x-5\right|=18+2.\left(-8\right)\)\(d\)) \(\left(3.x-2^4\right).7^5=2.7^6.\frac{1}{2009^0}\)
Tìm STN x biết rằng:
a)\(720:[41-\left(2x-5\right)]=2^3\cdot5\)
b)\(\left(x+1\right)+\left(x+2\right)+\left(x+3\right)+...+\left(x+100\right)=5+50\)
d)\(\left(x+3\right)^{10}=\left(x-3\right)^{17}\)
Tìm x biết :
\(\left|-2\right|\) . ( x + 4 - \(\left|x-1\right|\) ) = 2 + 2x
Tìm x, biết:
\(\dfrac{2}{\left(x-1\right)\left(x-3\right)}+\dfrac{5}{\left(x-3\right)\left(x-8\right)}+\dfrac{12}{\left(x-8\right)\left(x-20\right)}-\dfrac{1}{x-20}=\dfrac{-1}{4}\)
Chứng minh rằng :
a)dfrac{1}{x}-dfrac{1}{x+a}dfrac{a}{xleft(x+aright)}
b)dfrac{1}{xleft(x+1right)}-dfrac{1}{left(x+1right)left(x+2right)}dfrac{2}{xleft(x+1right)left(x+2right)}
c)dfrac{1}{xleft(x+1right)left(x+2right)}-dfrac{1}{left(x+1right)left(x+2right)left(x+3right)}dfrac{3}{xleft(x+1right)left(x+2right)left(x+3right)}
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Chứng minh rằng :
a)\(\dfrac{1}{x}\)-\(\dfrac{1}{x+a}=\dfrac{a}{x\left(x+a\right)}\)
b)\(\dfrac{1}{x\left(x+1\right)}-\dfrac{1}{\left(x+1\right)\left(x+2\right)}=\dfrac{2}{x\left(x+1\right)\left(x+2\right)}\)
c)\(\dfrac{1}{x\left(x+1\right)\left(x+2\right)}-\dfrac{1}{\left(x+1\right)\left(x+2\right)\left(x+3\right)}=\dfrac{3}{x\left(x+1\right)\left(x+2\right)\left(x+3\right)}\)
1)tìm x\(\in\)Q biết:
a)\(\left(5\cdot x+1\right)^2=\dfrac{36}{49}\)
2)tìm x,y biết:
a)\(x^2+\left(y-\dfrac{1}{10}\right)^4=0\)
b)\(\left(\dfrac{1}{2}x-5\right)^{20}+\left(y^2-\dfrac{1}{4}\right)^{40}\le0\)
Tìm x , y biết
a) 3x+2⋮ 2x-1
b) x2-2x+3⋮x-1
c) |2x-3|+left(y-1right)^{2^{ }}+left(27-1right)^2le0
Tính giá trị của các biểu thức
A 5a3b4 với a-1;b1
B9a5b2với a1;b-1
C ax+bx+ay+by với left{{}begin{matrix}a+b-2x+y17end{matrix}right.
Tìm Max ; Min
A|x-3|+1
B3-|x+1|
Cleft(x-1right)^2+left|2y+2right|.3
Đọc tiếp
Tìm x , y biết
a) 3x+2\(⋮\) 2x-1
b) x2-2x+3\(⋮\)x-1
c) \(|2x-3|+\left(y-1\right)^{2^{ }}+\left(27-1\right)^2\le0\)
Tính giá trị của các biểu thức
A =5a3b4 với a=-1;b=1
B=9a5b2với a=1;b=-1
C= ax+bx+ay+by với \(\left\{{}\begin{matrix}a+b=-2\\x+y=17\end{matrix}\right.\)
Tìm Max ; Min
A=\(|x-3|+1\)
B=\(3-|x+1|\)
C=\(\left(x-1\right)^2+\left|2y+2\right|.3\)
Tìm x:
a,\(x^2\) - 9 = 0
b,\(\left(x-3\right)^2-25=0\)
c,\(\left(x-3\right)\left(2x-5\right)=0\)
d,\(\left(x-3\right)\cdot x-2\left(x-3\right)=0\)
e,\(3x\left(x-1\right)-5\left(1-x\right)=0\)
g,\(x^2+6x-7=0\)
h,\(2x^2+5x-7=0\)