\(5-4\left(x-2\right)=3\left(2-x\right)\)
\(\Rightarrow\left(-1\right)\left[5-4\left(x-2\right)\right]=\left(-1\right)3\left(2-x\right)\)
\(\Rightarrow4\left(x-2\right)-5=3\left(x-2\right)\)
\(\Rightarrow x-2=5\)
\(\Rightarrow x=7\)
\(5-4\left(x-2\right)=3\left(2-x\right)\)
\(\Rightarrow\left(-1\right)\left[5-4\left(x-2\right)\right]=\left(-1\right)3\left(2-x\right)\)
\(\Rightarrow4\left(x-2\right)-5=3\left(x-2\right)\)
\(\Rightarrow x-2=5\)
\(\Rightarrow x=7\)
1) Tìm x
a) -5.(x+1/5)-1/2.(x-2/3)=3/2.x-5/6
b) 3.(x-1/2)-5.(x+3/5)=-x+1/5
c) /x/ - 38/7./x/-3/4=2./x/+(-8/7)
/x/ là giá trị tuyệt đối nhé các bn
Tìm x biết
a,|x-1|+2x=3
b,|x+1|+|x+3|=10-4x
c,|x+1++3|x-2|-5|4-x|=13-2x
d,3|x-2|-2|x+5|+4|x-1|=9-7x
Tìm x:
a) 5 - 4 (x - 2) = 3 . (2 -x)
b) 2 - 3 (x + 1) = x - 7
1, Tìm x biết
a, ( 4/5 )^2x+5 = 625/256
b, ( 3x - 4 )^4 = ( 3x - 4 )^2
c, 3^x+1 = 9^x
d, 2^2x+3 = 4^x-5
bài 1 Tìm GTNN
A= 2* | x- 3 | + 2x +5
B= | 3x -7 |+ |3x+2| -5
C= 5\ 7 |x| +2
bài 2 Tìm GTLN
P = -3 | x -4| + 8 - 3x
Q= 2* 17x+5\|7 x+5|
H= -1 \ |x| +5
Tìm x:
\(\frac{3}{4}x+\frac{2}{5}x-\frac{5}{3}=-2\)
Tìm các cặp số nguyên (x;y) sao cho
a, x-1/ 5 = 3 / y+4
b, y/5 + 1/10 = 1/x
c, x/4 - 1/2 = 3/y
d, x/5 - 4/y = 2/5
Tìm x : \(\frac{\left(x-3\right)^2}{2}-1\frac{1}{3}\left(x+2\right)^2-\frac{5}{4}\left(x-1\right)\left(x+1\right)=1\frac{1}{2}x\left(x-2\right)-x-4\)
Tìm x trong các tỉ lệ thức sau:
a, ( 1/3 . x ) : 2/3 = 7/4 : 2/5
b, 4,5 : 0,3 = 2,25 : ( 0,1 . x )
c, 8 : ( 1/4 . x ) = 2 : 0,02
d, 3 : 9/4 = 3/4 : ( 6 . x )