Tim x biet |x-3|-6=2x
tim x biet 2x+1/x-2=2x-3/x+6
tại sao không ai làm nhỉ?
(2x+1)(x+6) = ((X-2)(2X-3)
2x2 +12x+x +6 = 2x2 -3x-4x +6
20x =0
x =0
( 1 chữ cũng là thầy, nửa chữ cũng là thầy)
Tim so nguyen x biet : -x/2+2x/3+x+1/4+2x+1/6=3/8
12x/6 + 4x/6 - 3x/6 = 3/8 - 1/4 - 1/6
13x/6 = (9 - 6 - 4)/24 = -1/24
--> x = -1/52
tim x biet 3(x-5)-2(2x-3)+ 3(6-x)=17
\(3\left(x-5\right)-2\left(2x-3\right)+3\left(6-x\right)=17\)
\(\Rightarrow3x-15-4x+6+18-3x=17\)
\(\Rightarrow-4x=8\)
\(\Rightarrow x=-2\)
Vậy x = -2
tim x biet 3(x-5)-2(2x-3) 3(6-x)=17
tim x biet |x + 3| + 2|6 + 2x| + 2016 = 4016
\(\left|x+3\right|+2\left|6+2x\right|+2016=4016\)
\(\left|x+3\right|+2\left|6+2x\right|=4016-2016\)
\(\left|x+3\right|+2\times2\left|3+x\right|=2000\)
\(1\left|x+3\right|+4\left|x+3\right|=2000\)
\(\left|x+3\right|\left(1+4\right)=2000\)
\(5\left|x+3\right|=2000\)
\(\left|x+3\right|=2000:5\)
\(\left|x+3\right|=400\)
Vậy x=-403 hoặc 397
tim x,biet
5.(3-2x)+5(x-4)=6-4x
\(5\left(3-2x\right)+5\left(x-4\right)=6-4x\\ \Leftrightarrow15-10x+5x-20=6-4x\\ \Leftrightarrow-10x+5x+4x=6-15+20\\ \Leftrightarrow-x=11\\ \Leftrightarrow x=-11\)
tim x,y,z biet x/4=y/3 . x/3=z/5 và 2x-3y=6
dễ cực cho mình **** đi mình giải cho
tim x biet x-y=xy-1
cm x^3 -x^2 -2x^2 +2x chia het cho 6
Tim x biet:
|x+3|+|2x-1|=6
Cach lam nha