tìm x 

m) \(6x+x=5^{11}:5^9+3^1\)

n) \(7x-x=5^{21}:5^{19}+3\times2^2-7^0\)

o) \(7x-2x=6^{17}:6^{15}+44:11\)

p) \(3^x=9\)

q) \(4^x=64\)

u) \(\left|x-2\right|=0\)

v) \(\left|x-5\right|=7-\left(-3\right)\)

w) \(\left|x-5\right|=\left|-7\right|\)

t) \(2^x:2^5=1\)

r) \(9^{x-1}=9\)

x) \(\left|x\right|-5=3\)

y) \(15-2\left|x\right|=13\)

s) \(x^4=16\)

a. \(\frac{3^2\times64^2-12^2\times16^2\times19+51\times33}{3+6+9+...+96+99}\)

b. \(\frac{6^3\times9^7\times4^3-16^2\times81^4}{\left(24\times3\right)^2}\)

c. \(\frac{21\times5^{21}\times5^8-25^{13}}{\left(4\times5^{14}\right)^2}\)

d. \(\frac{81^4\times3^{10}\times27^5\div3^{12}}{9^9\div9^3\times243^3}\)

e. \(\frac{18^6\div2^{11}\div9^3\times4^3}{32^2\div6^9\times3^6}\)
 

a)\(\dfrac{2}{7}+\dfrac{-3}{8}+\dfrac{11}{7}+\dfrac{1}{7}_{ }+\dfrac{5}{-8}\)

b)\(\dfrac{3}{17}+\dfrac{-5}{13}+\dfrac{-18}{35}+\dfrac{14}{17}+\dfrac{17}{-35}_{ }+\dfrac{-8}{13}\)

c)\(\dfrac{-3}{8}+\dfrac{12}{25}+\dfrac{5}{-8}+\dfrac{2}{-5}+\dfrac{13}{25}\)

d)\(\dfrac{-5}{21}+\left(\dfrac{-16}{21}+1\right)\)

e)\(\dfrac{-3}{17}+\left(\dfrac{2}{3}+\dfrac{3}{17}\right)\)

f)\(\left(\dfrac{-1}{6}+\dfrac{5}{-12}\right)+\dfrac{7}{12}\)

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

tìm x \(\in\)N

1, \(x^2.x^3=3^7:3^2\)

2, \(x-18:3=12\)

3,\(\left(x-18\right):2=12\)

4,\(x^2=16\)

5,\(\left(2x+2^4\right).5^3\)

6,\(\left(3x-48\right).6=3^3.2^2+2^2.3^2=12^2\)

7,\(1170:\left(x-13\right)=339-3.10^2\)

8,\(\left(x-1\right).11=33\)

9,\(3.\left(x-9\right)+15=12+243:3^2\)

10,\(30:\left(x-7\right)=15^9:15^8\)

Bài 1: Tìm x

a. \(x-\frac{5}{12}-\frac{4}{9}=\frac{-13}{18}\)

b. \(2-\left(x+\frac{3}{7}\right)=\frac{9}{-21}\)

c. \(x-\frac{-3}{11}=\frac{6}{22}+\frac{1}{4}\)

d. \(\frac{13}{36}-\frac{5}{18}-x=\frac{-11}{9}\)

e. \(x-\frac{3}{7}:\frac{9}{14}=\frac{-17}{3}\)

f. \(\left(x-\frac{1}{2}\right):\frac{3}{11}=\frac{11}{4}\)

g. \(\left(2x+\frac{3}{8}\right).\frac{7}{4}=-\frac{21}{32}\)

h. \(x-\frac{x}{3}=\frac{3}{57}:\frac{12}{19}\)

Vì dài qua cho nên bài 2 mình để riêng nhé

bài 1:thực hiện phép tính : 

a)\(\frac{3}{7}+\frac{5}{13}+\frac{4}{13}\)

b)\(\left(\frac{3}{8}+\frac{-3}{4}+\frac{7}{12}\right):\frac{5}{6}+\frac{1}{2}\)

c)\(\frac{2}{5}.\frac{1}{3}-\frac{2}{15}:\frac{1}{5}+\frac{3}{5}.\frac{1}{3}\)

d)\(\left(4-\frac{5}{12}\right):2+\frac{5}{24}\)

e)\(\frac{7}{19}.\frac{8}{11}+\frac{3}{11}.\frac{7}{19}+\frac{-1}{19}\)

f)\(\frac{9}{27}+\frac{8}{24}+\frac{18}{27}-\frac{-16}{24}+\frac{2}{3}\)

g)\(\frac{-5}{21}+\frac{-2}{21}+\frac{8}{24}\)

h)\(\frac{-5}{9}+\frac{8}{15}+\frac{-2}{11}+\frac{4}{-9}+\frac{7}{15}\)

i)\(\frac{7}{25}.\frac{39}{-14}.\frac{50}{78}\)

m.n làm nhanh cho mình nhé, chiều mình phải nộp rồi! cảm ơn m.n!