- { x-3 }+2.{3x+2} =x-4
-x+3+6x+4=x-4
4x =-4-3-4
4x =-11
x =-2.75
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- { x-3 }+2.{3x+2} =x-4
-x+3+6x+4=x-4
4x =-4-3-4
4x =-11
x =-2.75
tim so tu nhien x biet
(2.x+1)mu 5 /(2.n+1)mu 2=1
2 mũ x+2 .2 mu x+........+10.2 mu x =10 . 11
dau / nay la dau chia
dau . nay la nhan do nhe!!!!
tim 2 so tu nhien x va y biet (3x-2)x(2y-3)=1
tim 2 so tu nhien x va y biet (3x-2)x(2y-3)=1
tim x biet 45-3x+2.{3-x}=4
tim x,biet
a,-x.[ x+3 ]=0
b, [ x-2 ]. [ 3x-9 ]=0
tim x biet 50%x+2/3x=x+4
tim 1 co 2 chu so biet rang so do theo thu tu nguoc lai gap 4 lan so dau hon 3 don vi
tim x biet : a,-12/21×x + 3/7=-4/3, b, 2x +-3^2=5/4 , c, 75% x- 2/5=3/10, d, (3x-2)×(x+7)
tim x biet |3x-2|-x=7