1:tìm x

a; \(3x+\left|x-2\right|=8\)

b; \(5-\left|x-1\right|=4\)

2:tìm x

\(5\cdot\left(x-2\right)-4\cdot\left(1-3x\right)=\left|3-7\right|+2\cdot\left(1+2x\right)\)

3: tìm x

\(\left(x-2\right)\cdot\left(2x+1\right)-3\cdot\left(x+2\right)=4-5\cdot\left(1-x\right)\)

4:tìm x

\(1\dfrac{1}{2}\cdot\left(x-2\right)-\dfrac{x-5}{3}=3\dfrac{1}{3}\cdot\left(1-2x\right)-\dfrac{5\cdot\left(x+1\right)}{6}\)

5: tìm x

\(\left(x-3\right)\cdot\left(1-x\right)+\left(x-2\right)^2=\left(1-x\right)^2-2\cdot\left(1+x\right)\)

6: tìm x

\(\left(2x-1\right)^2-3\cdot\left(x+2\right)^2=4\cdot\left(x-2\right)-5\cdot\left(x-1\right)^2\)

tìm x

a) \(\frac{x-1}{2}+\frac{x-2}{5}=\frac{1}{4}+\frac{x-7}{10}\)

b) \(3-\frac{2}{2x-3}=\frac{2}{5}+\frac{1}{2x-3}-\frac{3}{2}\)

c)\(7\cdot\left(x-1\right)+2x\cdot\left(1-x\right)=0\)

d) \(\frac{x+1}{2008}+\frac{x+2}{2017}+\frac{x+3}{2016}=\frac{x+10}{2009}+\frac{x+11}{2008}+\frac{x+12}{2007}\)

e) \(\frac{2}{\left(x-1\right)\cdot\left(x-3\right)}+\frac{5}{\left(x-3\right)\cdot\left(x-8\right)}+\frac{12}{\left(x-8\right)\cdot\left(x-20\right)}-\frac{1}{x-20}=\frac{-3}{4}\)

4,Tìm x biết

a,\(\frac{-2}{3}\cdot x+\frac{1}{5}=\frac{3}{10}\)

b,\(\frac{2}{3}\cdot x-\frac{3}{2}\cdot x=\frac{5}{12}\)

c,\(\left(4,5-2x\right)\cdot\left(-1\frac{4}{7}\right)=\frac{11}{14}\)

d,\(\frac{1}{4}+\frac{1}{3}:3x=-5\)

e,\(\left(2\frac{4}{5}x-50\right):\frac{2}{3}=51\)

g,\(|4x-1|=\left(-3^2\right)\)

h,\(|x+70|=2\frac{1}{5}\)

i,\(\left(x-1^3\right)=125\)

k,\(\left(x+\frac{1}{2}\right)\cdot\left(\frac{2}{3}-2x\right)=0\)

Giúp mình nhé!!!

a)\(\left(2^2+3\right)\cdot\left(x-5\right)+14=5^2124:2^2\) 

b) \(3^2\cdot\left(x+1\right)-3=2^3+7^2\cdot2:14\)

c) \(2^2\cdot3\cdot\left(x+5\right)-6=\left(2^3+2^2\right)\cdot2^2\)

d) \(\left(2^2+1\right)\cdot\left(x+14\right)=5^2\cdot4+\left(2^5+3^2+7^2\right):2\)

e) \(\left(2^2-1\right)\cdot\left(x-1\right)=2^2+\left(6^2+2^6\right):\left(5^2\cdot2\right)\)

g) \(\left(3^2-2\right)\cdot\left(x-12\right)+35=5^2+279:3^2\)

nhìn thì cảm thấy khó nhưng lại rất dễ đó

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 \(x\in Z\):

a. \(2\times\left(x-5\right)-3\times\left(x-4\right)=\left(-6\right)+15\times\left(-3\right)\)

b.\(\left(2x-5\right)-7=22\)

c.\(\left(2\times\left|x\right|-6\right)\times11=44\)

d.\(\left|x+3\right|+\left|x+5\right|+\left|x+9\right|=4x\)

e.\(\left|x-1\right|+\left|x-5\right|=4\)

g.\(x+\left(x+1\right)+\left(x+2\right)+.......+100=0\)