cho x,y ti le thuan tim x biet x2=3,y1=-2,y2=\(\dfrac{3}{8}\) tim x2,y2biet y2-x2=-5,x1=-6,y1=4
2.(x-5)-3.(x+6)=10+x
tim x biet
tim x biet
2.(x-5)-3.(x+6)=10+x
Tim x,biet
a)(x-6)10=(x-6)8
tim x biet /x/+/x+2/=3
tim x biet 2.(x+1)-3.(x+2)=10
tim x biet |x + 3| + 2|6 + 2x| + 2016 = 4016
Tim x,y biet
a)\(\frac{x}{y}=\frac{4}{5},\frac{x+1,2}{y}=\frac{11}{15}\)
tim x,y biet:
3lx-2l-lx+1l=x+5
lx-2l+lx+2l=4-y^2 với x,y thuộc Z.