413 . 526 = 413 . 513+13 = 413 . 513 . 513 = (4 . 5 . 5)13 = 10013
413 . 526 = 413 . 513+13 = 413 . 513 . 513 = (4 . 5 . 5)13 = 10013
1,Tính
A,15/16.4/3-1/2÷5/4+3
B,(2/3-3/8)÷(3/5+1/4)
C,15/8×(1/3+1/8)-3/8÷3/4
D,20/21÷(4/5-1/10)+13/15÷5/26
5.3mũ2-16:2mũ3
26.(-42)+(-26).58-400
7-(-13)
-4.(3.5mũ2-4.2mũ3)
155\(-\dfrac{10}{7}-\dfrac{5}{11}+\dfrac{5}{23}:403+\dfrac{13}{23}-\dfrac{26}{7}-\dfrac{13}{11}\)
Rút gọn p/số:
a/ \(\frac{2.\left(-13\right).9.10}{\left(-3\right).4.\left(-5\right).26}\)
b/ \(\frac{15.8+15.4}{12.3}\)
Rút gọn các biểu thức sau;
\(\dfrac{-5}{12}.\dfrac{2}{7}+\dfrac{7}{12}.\dfrac{-3}{14}\)
b)\(\dfrac{2.\left(-13\right).9.10}{\left(-3\right).4.\left(-5\right).26}\)
c) 1.\(\dfrac{13}{15}-0,75-\)(\(\dfrac{104}{195}+25\%\)).\(\dfrac{24}{47}-3\dfrac{12}{13}:3\)
Bạn nào giúp được mk ko
64 x 26 + 4 x58 x 13 + 52 x 10
|x – 7| + 13 = 25 26 - |x + 9| = -13
Bài 2: Tìm x thuộc Z biết:
a. x = \(2^4+3^2.3^2\) b. 71+ (26-3x) :5 = 75 c. 4 - (27-3) = x - (13-4)
bài 1 : so sánh :
a) \(\dfrac{23}{21}\)và\(\dfrac{21}{23}\)
b)\(\dfrac{19}{26}\)và \(\dfrac{21}{25}\)
bài 2 : sắp sếp các phân số sau từ bé đến lớn :
a)\(\dfrac{7}{36};\dfrac{24}{36};\dfrac{13}{36};\dfrac{1}{36};\dfrac{43}{36};\dfrac{36}{36}\)
b)\(\dfrac{-3}{10};\dfrac{-31}{100};\dfrac{-297}{1000};\dfrac{10000}{-3056}\)
c)\(\dfrac{13}{20};\dfrac{7}{20};\dfrac{9}{4};\dfrac{2}{5};\dfrac{1}{2}\)
d)\(\dfrac{13}{21};\dfrac{152}{17};\dfrac{13}{17};\dfrac{-5}{21}\)
e)\(\dfrac{-1}{2};\dfrac{3}{-4};\dfrac{-2}{3};\dfrac{4}{-5}\)