Các câu hỏi tương tự
rút gọn các phân số sau
a/ 2^3x3^4 / 2^2x3^2x5
2^4x5^2x11^2x7 / 2^3x5^3x7^2x11
b/ 121x75x130x169 / 39x60x11x198
c/1998x1990+3978 / 1992x1991-3984
A=5/9+2/15-6/9
B=2/7-3/8+4/7+1/7-5/8+5/15
C=3/5+1/15+1/57+1/3-2/9-3/4-1/36
D=1/1x2+1/2x3+1/3x4+...+1/99x100
E=1-3/1x3-3/3x5-3/5x7-...-19
help plssssssss
7^9:7^7-3^2+2^3x5^2 = ????
23.75+25.23=????
-27-15=????
|-5|+(-21)=???
Tìm X
x+3=2^3:2
-x+12=-5
2/3 .7/15 - 2/3 .5/27
________________
-4/9.7/15+4/9.5/27
giup mk voi
21 tháng 2 2022 lúc 17:01
dfrac{-1}{3}.dfrac{2}{5}dfrac{-3}{7}.dfrac{4}{15}dfrac{-9}{3}.dfrac{15}{27}dfrac{-5}{6}.( -12 )dfrac{-12}{4}.dfrac{8}{9}-3.dfrac{7}{6}dfrac{-15}{9}.dfrac{27}{5}-9.dfrac{4}{27}
Đọc tiếp
\(\dfrac{-1}{3}.\dfrac{2}{5}\)
\(\dfrac{-3}{7}.\dfrac{4}{15}\)
\(\dfrac{-9}{3}.\dfrac{15}{27}\)
\(\dfrac{-5}{6}.\)( -12 )
\(\dfrac{-12}{4}.\dfrac{8}{9}\)
\(-3.\dfrac{7}{6}\)
\(\dfrac{-15}{9}.\dfrac{27}{5}\)
\(-9.\dfrac{4}{27}\)
2 ^ 15 : 2 ^ 13 + 3 ^ 2. 2 ^ 3 - 5 ^ 2 - 2 ^ 0
81 . ( 27 + 9 ^ 15) : (3 ^ 5 + 3 ^ 32)
(4 ^ 42 .123 - 23 . 4 ^ 42) : (4 ^ 15 . 4 ^ 27)
(15 . 3 ^ 7 - 3 ^ 8) : (4 . 9 ^ 4)
(100 . 5 ^ 7 + 5 ^ 11 : 25 ) : ( 5 . 5 ^ 13 : 25 ^ 2)
( 2 ^ 5 . 3 ^ 6 . 5 ^ 7 + 2 ^ 6 . 3 ^ 7 . 5 ^ 8 ) : ( 2 ^ 4 . 3 ^ 5 . 5 ^ 6)
(4 ^ 5 . 10 . 5 ^ 6 + 2 ^ 8 . 25 ^ 5) : ( 2 ^ 8 . 5 ^ 4 + 5 ^ 4 + 5 ^ 7 . 2 ^ 5)
tặng 2 like cho người giải !!!
b=15*4^12*9^7-4*3^15*8^8/19*2^24*3^14-6*4^12*27^5
1)\(\frac{4}{7}:\frac{-15}{28}x\left(-3\right)^2\) 2)\(\frac{15}{49}x1,4-\left(\frac{2}{3}+\frac{4}{5}\right);\frac{22}{10}\) 3)\(\frac{1}{4}-\frac{7}{4}:\left(-7\right)-3:\frac{3}{4}x\left(-2\right)^{^2}\)
4)\(\frac{5}{1x3}+\frac{5}{3x5}+\frac{5}{5x7}+....\frac{5}{197x199}\)
1.Tính nhanh
b. 4.(-5)2 + 2.(-5) - 20
c. 27.(15-12) - 15.(27-12)