\(\dfrac{\left(8\cdot5^7+5^6-5^5\right)}{5^5}\)
\(=\dfrac{5^5\cdot\left(8\cdot5^2+5-1\right)}{5^5}\)
\(=8\cdot25+4=204\)
\(\dfrac{\left(8\cdot5^7+5^6-5^5\right)}{5^5}\)
\(=\dfrac{5^5\cdot\left(8\cdot5^2+5-1\right)}{5^5}\)
\(=8\cdot25+4=204\)
1 1 1=6
2 2 2=6
3 3 3=6
4 4 4=6
5 5 5=6
6 6 6=6
7 7 7=6
8 8 8=6
9 9 9=6
10 10 10=6
(Làm gì đó để phép tính bằng 6)
thực hiện phép tính
a.\(\dfrac{x}{3x+y}+\dfrac{x}{3x-y}-\dfrac{2xy}{y^2-9x^2}\)
b.\(\dfrac{4x+5}{x^2+5x}-\dfrac{3}{x+5}\)
Giải phương trình sau:
a) 7x/8-5(x-9) =20x+1, 5/6
b) 5(x-1) /6-7x-1/4=2(2x+1)/7-5
Gíup mình với
Giải các phương trình sau:
a) (2x+5). 6/2=75
b) x-3/5=6-1-2x/3
c) 2x/3+2x-1/6=4-x/3.
d) x-1/2+x-1/4=1-x/3
e) 7x/8-5(x-9)=20x+1, 5/6
f) 5(x-1) /6-7x-1/4=2(2x+1) /7-5
GÍUP MÌNH VỚI
thực hiện phép tính:
1) \(\dfrac{-1}{12}\)- (2\(\dfrac{5}{8}\)- \(\dfrac{1}{3}\))
2) -1,75 - (\(\dfrac{-1}{9}\) - 2\(\dfrac{1}{18}\))
3) -\(\dfrac{5}{6}\) - (\(-\dfrac{3}{8}\)+\(\dfrac{1}{10}\))
4) \(\dfrac{2}{5}\)+(\(-\dfrac{4}{3}\))+(\(-\dfrac{1}{2}\))
5) \(\dfrac{3}{12}\)- (\(\dfrac{6}{15}\)- \(\dfrac{3}{10}\))
6) (\(8\dfrac{5}{11}\)+\(3\dfrac{5}{8}\))- \(3\dfrac{5}{11}\)
7) \(\dfrac{-1}{4}\). \(13\dfrac{9}{11}\)- 0,25 . \(6\dfrac{2}{11}\)
8) \(\dfrac{4}{9}\):(\(-\dfrac{1}{7}\))+ \(6\dfrac{5}{9}\): (\(-\dfrac{1}{7}\))
1) Tìm x biết
a) x\(^5\)(3x-1)\(^{m+3}\): x\(^5\)(3n-1)\(^{m-1}\)-5\(^6\): 5\(^2\)= 0 ( x\(\ne\)\(\dfrac{1}{2}\), x \(\ne\)\(\dfrac{1}{3}\))
2) Thực hiện phép chia
( 10\(^{12}\)+ 5\(^{11}\). 2\(^9\)- 5\(^{13}\). 2\(^8\)) : 4.5.10\(^6\)
Giải phương trình :
\(\dfrac{x}{10}+\dfrac{x-1}{9}+\dfrac{x-2}{8}+\dfrac{x-3}{7}+\dfrac{x-4}{6}+\dfrac{x-5}{5}\)= 6
bài 1: giải các phươn trình sau:
a. 2(x+3/5) =5- (13/5+x)
b. 7/8x - 5(x-9)=20x + 1,5/6
c. 7x -1/6 +2x= 16-x /5
d. 3x +2/2 -3x +1/6 =5/3 +2x
bài 1: giải các phươn trình sau:
a. 2(x+3/5) =5- (13/5+x)
b. 7/8x - 5(x-9)=20x + 1,5/6
c. 7x -1/6 +2x= 16-x /5
d. 3x +2/2 -3x +1/6 =5/3 +2x