Ta có: x - 3|x + 5| = 7
=> 3|x + 5| = x - 7
\(\Rightarrow\orbr{\begin{cases}3\left(x+5\right)=x-7\\3\left(x+5\right)=7-x\end{cases}\Rightarrow\orbr{\begin{cases}3x+15=x-7\\3x+15=7-x\end{cases}}}\)
\(\Rightarrow\orbr{\begin{cases}2x=-22\\4x=-8\end{cases}\Rightarrow\orbr{\begin{cases}x=-11\\x=-2\end{cases}}}\)
Vậy x = -11 , x = -2
cac ban giup mk bai nay vs...
tim x:
x/7=x+16/35
8/x=7/x-16
cac ban oi giup mik giai bai nay vs!
Bai 1:Tim so tu nhien n biet 1< n<1000 va n chia cho 7, 9, 11 deu cho so du la 1.
day la chuyen muc giai toan nhung cac cau giup to giai bai van nay vs nhe cam on cac nhiu
tu cac so sau 0,1,2,3,4,5,6,7.
hay viet mot doan van tu cac so tren
ai giai minh tik cho
Viet tap hop A cac so nguyen x biet rang:
-42/14 be hon hoac = x be hon 5/8
Giup mk bai nay voi mk se tick bn nao co loi giai chi tiet
Cac ban giup toi co loi giai doi voi bai toan nay nhE
(x-3)2=25
2^3+3^3+4^3+...+20^3=? Giup minh giai bai nay nhe giai thich cach lam nhe cac ban
3/x+5=15%
giup mk giai bai nay nhanh nha
Cac ban giai giup minh bai nay voi
a 1+(-3)+2+(-4)+3+(-5)+...+98+(-100)
b 1+(-5)+2+(-6)+3+(-7)+...+99+(-103)
Tim cac so nguyen x,y biet : (x+3)x ( y-5)= 25
Giup mik vs, chieu nay mik nop bai r