Tìm x thuộc Z, biết:

a. 1 + \(\left\{-2-[-3+\left(-4+\left|x\right|\right)]\right\}=1-2+[\left(-3-4\right)]\)

b. 34 + (9 - 21) = 3417 - (x + 3417)

c. x - \(\left\{55-[49+\left(-28-x\right)]\right\}=13-\left\{47+[25-\left(32-x\right)]\right\}\)

d. (15 - x) + (x - 12) = 7 - (-8 + x)

e. - 7 + \(\left|x-4\right|\) = - 3

f. 13 - \(|\)x + 5\(|\) = 13

g. \(|\)x + 1\(|\) > 2

h. \(|\)x + 2\(|\) ≤ 5

i. \(|\)x - 10\(|\) - (-12) = 4

bài 2 tìm x

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

b,\(\left|x\right|-\frac{3}{4}=\frac{5}{3}\)

c,\(\frac{2}{3}.x-\frac{1}{2}=\frac{1}{10}\)

d,\(\frac{3}{5}+\frac{4}{9}:x=\frac{2}{3}\)

e,\(\left|x+75\%\right|=2\frac{1}{5}\)

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

k,\(\frac{4}{7}.x-\frac{2}{3}=\frac{1}{5}\)

l,\(\frac{2}{3}.x-\frac{3}{2}.x=\frac{5}{12}\)

m,\(\left|2.x-\frac{1}{3}\right|+\frac{5}{6}=1\)

n,\(\frac{1}{3}-\frac{7}{8}.x=\frac{1}{3}\)

11,\(\frac{x+2}{5}=\frac{7}{12}-1\frac{1}{4}\)

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

13,\(\frac{2}{5}+\frac{3}{5}.\left(3.x-3,7\right)=-\frac{53}{10}\)

14,\(\frac{7}{9}:\left(2+\frac{3}{4}.x\right)+\frac{5}{9}=\frac{23}{27}\)

Tìm x thuộc Z, biết:

a. 18 - \(|\)x - 1\(|\) = 2\(^2\)

b. x - \(\left\{55-[49+\left(-28-x\right)]\right\}=13-\left\{47+[25-\left(32-x\right)]\right\}\)

c. -7 + \(|\)c - 4\(|\) = -3

d. 13 - \(|\)x + 5\(|\) = 13

e. \(|\)x - 10\(|\) - (-12) = 4

f. \(|\)x + 2\(|\) ≤ 5

g. \(|\)x + 1\(|\) > 2

a) \(\left|2x\frac{1}{3}\right|+\frac{5}{6}=1\)

b)\(\frac{17}{2}-\left|2x-\frac{3}{4}\right|=-\frac{7}{4}\)

c) \(\frac{2}{3}x-\frac{3}{2}x=\frac{5}{12}\)

d) \(\frac{2}{5}+\frac{3}{5}.\left(3x-3,7\right)=-\frac{53}{10}\)

e) \(\frac{7}{9}:\left(2+\frac{3}{4}x\right)+\frac{5}{9}=\frac{23}{27}\)

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

g)\(\left(x+\frac{1}{2}\right).\left(\frac{2}{3}-2x\right)=0\)

h)\(x.3\frac{1}{4}+\left(-\frac{7}{6}\right).x-1\frac{2}{3}=\frac{5}{12}\)

i)\(\frac{6}{2}=\frac{-5+x}{15}\)

k)\(\frac{1}{21}+\frac{1}{28}+\frac{1}{36}+...+\frac{2}{x\left(x+1\right)}=\frac{2}{9}\)

\(\frac{3}{\left(x+2\right).\left(x+5\right)}\)+\(\frac{5}{\left(x+5\right).\left(x+10\right)}\)+\(\frac{7}{\left(x+10\right).\left(x+5\right)}\)=\(\frac{x}{\left(x+2\right).\left(x+17\right)}\)

\(\frac{x-1}{2009}\)+ \(\frac{x-2}{2008}\)=\(\frac{x-3}{2007}\)  + \(\frac{x-4}{2006}\)

+Tim x : 

a ) \(\left(x-\frac{1}{2}\right)^3=\frac{1}{27}\)  

b )\(\left(x+\frac{1}{2}\right)^2=\frac{4}{25}\)

c ) \(\left(x+1\right)^{x+2}=\left(x-1\right)^{x+6}\) (x ϵ Z )

d ) \(\left(2x+3\right)^{2016}=\left(2x+3\right)^{2018}\)

e ) \(\frac{3}{x+2.x+5}+\frac{5}{x+5.x+10}+\frac{7}{x+10.x+17}=\frac{x}{x+2.x+17}\) Với  \(x\notin\left\{-2;-5;-10;-17\right\}\)

Tìm số nguyên x

1/ \(17x+3\left(-16x-37\right)=2x+43-4x\)

2/ \(-2x-3\left(x-17\right)=34-2\left(-x+25\right)\)

3/ \(\left\{-3x+2\left[45-x-3\left(3x+7\right)-2x\right]+4x\right\}=55-103-57:\left[-2\left(2x-1\right)^2-\left(-9\right)^0\right]=-106\)

4/ \(-2x+3\left\{12-2\left[3x-\left(20+2x\right)-4x\right]+1\right\}=45\)

5/ \(3x-32>-5+1\)

6/ \(15+4x< 2x-145\)

7/ \(-3\left(2x+5\right)-16< -4\left(3-2x\right)\)

8/ \(-2x+15< 3x-7< 19-x\)

Tìm số x , biết

a) \(\dfrac{2}{3}x-\dfrac{3}{2}x=\dfrac{5}{12}\)

b) \(\dfrac{2}{5}+\dfrac{3}{5}.\left(3x-3,7\right)=-\dfrac{53}{10}\)

c) \(\dfrac{7}{9}:\left(2+\dfrac{3}{4}x\right)+\dfrac{5}{9}=\dfrac{23}{27}\)

d) \(\dfrac{-2}{3}.x+\dfrac{1}{5}=\dfrac{3}{10}\)

e) \(\left|x\right|-\dfrac{3}{4}=\dfrac{5}{3}\)

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