Tim x,y,z biet:2(x-1)-3(2x+2)-4(2x+3)=16
tim x biet (1/2)^(-4+4)=(1/4)^(3/2x-4)
Tim xthuoc Z biet:
1,|2x-5|-|2x+9|=0
2,|x+1|-|x+2|-|3-x|=7
3,|2x+3|+|3x+2|-|4-x|=10
Tim x,y,z biet:2(x-1)-3(2x+2)-4(2x+3)=16
giai day du
tim x biet (2x-3)^2-4(x+1)^2=5
tim x biet (2x-3)^2-4.(x+1)^2=5
tim x , biet :
1 ) 2017 - \ x - 2017 \ = x
2) -1/2 . ( 3x - 1 ) + 3/4 . ( 3-2x) = -3 . ( x/2 - 1 ) - ( 4/5) mu -1
tim x biet |2x+3|-2|4-x|=5
Tim x+y+z = ? biet (x-1) /2= (y-2) /3 = (z-3) /4 va 2x+3y-z=95