tìm x
a) x -7 = - 5
b) 128 - 3 . ( x + 4 ) = 23
c) [ ( 6x - 39 ) : 7 ] . 4 = 12
d) ( x : 3 - 4 ) . 5 = 15
cac ban oi giai giup minh nhe cam on
Tìm x là stn
6x : 33 :4 = 2
3.(x-5)3=81
7x - 2x=617: 615+ 38 : 26
Giup minh vơi a , co cach lam nhe a
Cam on
MN GIUP MINH VOI DAG CAN GAP
tim x
[(6x-39)chia 7 ]
x=?
cam on ban nao da giup minh giai cau nay
-x^3-2x^2+7-(-3x^4+x^3+10x^2-7=?
giai day du cho to nhe to se tick cho cam on cac ban nhiu
2.
1+2=3
4+5+6=7+8
9+10+11+12=13+14+15.
........
tim so cuoi cung tren hang thu 99 cua day,neu viet tiep theo mau tren.
giai giup minh nhe cac ban dep trai dep gai hoc gioi oi cam on anh chi ban be.
Giai phuong trinh, bat phuong trinh sau:
x-3/x-2 + x-2/x-4 = 16/5x-4/5 - x + 4 > x/3 - x-2/2 Giai giup minh nhe. Cam on rat nhieu.x=1+2+3+4+5+6...
CO BAN NAO GIAI GIUP MINH KO MINHCUNG KO CHAC DE NAY DUNG KO NUA MONG CAC BAN THONG CAM NHE
cụ thể là cộng đến bao nhiêu
1+2+3+4+...+99
hay 1+2+3+$+...+10000
hay......
Bai 1. 12 chia het ( x + 3 )
bai 2. Tim so tu nhien x, biet 6x + 4 chia het cho 2x
cac ban nho giai chi tiet giup minh nha cam on
M=(5^9+5^8+5^7).(3^6+3^5+3^4+3^3+3^2+3) chung minh chia het cho 2015
giup minh giai ra nhe cam on
a, 4 2/5 + 5 2/3 + 2 3/4 + 3/5 + 4/12 + 1/4 = ?
b, 41/27 x 13/18 - 13/18 x 14/27 =?
CAC BAN HAY LAM DIEN GIAI RA CHO MINH NHE ....... MINH RAT CAM ON CAC BAN
a)\(4\frac{2}{5}+5\frac{2}{3}+2\frac{3}{4}+\frac{3}{5}+\frac{4}{12}+\frac{1}{4}\)
\(=\left(4\frac{2}{5}+\frac{3}{5}\right)+\left(5\frac{2}{3}+\frac{4}{12}\right)+\left(2\frac{3}{4}+\frac{1}{4}\right)\)
\(=5+6+3=14\)
b)\(\frac{41}{27}\cdot\frac{13}{18}-\frac{13}{18}\cdot\frac{14}{27}\)
\(=\frac{13}{18}\cdot\left(\frac{41}{27}-\frac{14}{27}\right)\)
\(=\frac{13}{18}\cdot1=\frac{13}{18}\)