Các câu hỏi tương tự
tim x, biet:
a, |2x-1|= |2x+3|
b, |5x-3|-x=7
Tim x biet:
\(\frac{2x+2}{5x-3}=\frac{2x+12}{5x+18}\)
tim x biet
a;\(\frac{3x+2}{5x+7}=\frac{3x-1}{5x+1}\)
b; \(\frac{x+1}{2x+1}=\frac{0,5x+2}{x+3}\)
tim x,y biet :a)x/y =7/3 va 5x -2y -87 b)x/19 = y/21 va 2x -y =34
so sanh -58/89 va 36/-53
tim x thuoc z biet
a) 2x+7 chia het x+3
b) x^2 +5x+11 chia hetx+3
tim da thuc f(x) roi tim nghiem cua f(x) biet rang:x^3+2x^2(4y-1)-4xy^2-9y^3-f(x)=-5x^3+8x^2y-4xy^2-9y^3
Tim x biet/2x+1/+/3-5x/=6x+10
tim x biet a) |3x-2|+5x=4x-10
b)3+ |2x+5|>13
tim x biet 2x+9/x+2 + 5x+17/ x+3 - 3x/ x+3 ( x thuoc Z)