\(1,5x-2\frac{1}{3}x=1,5-\frac{2}{3}\)
\(\Leftrightarrow\frac{3}{2}x-\frac{7}{3}x=\frac{3}{2}-\frac{2}{3}\)
\(\Leftrightarrow-\frac{5}{6}x=\frac{5}{6}\)
\(\Leftrightarrow x=-1\)
\(1,5x-2\frac{1}{3}x=1,5-\frac{2}{3}\)
\(\Leftrightarrow\left(\frac{3}{2}-\frac{7}{3}\right)x=\frac{5}{6}\)
\(\Leftrightarrow-\frac{5}{6}x=\frac{5}{6}\)\(\Rightarrow x=-1\)
Bài 1: Tìm x biết
1) |5x - 3| = |7 - x|
2) 2 |3 x - 1| - 3x = 7
3) |2x + 3| + 4 = -2x
4) |x + 3/4| - 1/3 = 0
5) 1,6 - |x + 1,5| = 0
6) |x - 1,5| + |2,5 - x| = 0
Tìm GTNN
A= |3x + 1| - 2
B= |3,7 - x| +2,5
C= |x+1,5| - 4,5
D= |x-3/4| +1
tìm GTNN của: a) \(2\left|3x-1\right|-4\) b) \(1,5+\left|2-x\right|\)
1) (-2,5.0,375.0,4)-[0,125.3,25.(-8)]=?
2) Tìm GTLN của Q = 19,5 - |1,5-x| là bao nhiêu
3) Tìm GTNN của A=x4 + 3x2 - 4
Tính
a, |5-3x|+2/3=1/6
b, -2,5+|3x+5|=-1,5
c, 11/5-|1/5-x|=3/5
d, |x-2/5|+1/2=3/4
Tìm x,biết
a,|-2x+1,5|=1/4
b,|x-1|-2x=1/2
c,|4x-1|-|3x-1/2|=0
d,|1/2|+|3x-2|=|x-1|
e,2.|x-2|+3.|x-1|=x-1
Tìm x biêt:
a)5x(x-1\3)=0
b)(x+1\4)(x-2\3)=0
c)1+3x=-5
d)1,5x-\(2\frac{1}{3}\)=1,5-2\3
e)2\3+1\3:x=3\5
y)\(\left(\frac{2x}{3}-3\right):\left(-10\right)=\frac{2}{5}\)
1, tìm x biết:
a, |2,7-x|=|-0,3|
b,12/5 -|x+1,5|=0
c,2.|2x-3|=1/2
d, 7,5-3.|5-2x|=-4,5
e, |3x-4|+|3y+15|=0
ê, |x-y|+ |y+9/25|=0
\(5x-9=5+3x;2^3+0,5x=1,5;\left(5x+1\right)^2=\dfrac{36}{49};\left(\dfrac{-3}{81}\right)^x=-27;2^{x-1}=16\)
