\(4\left(x-1\right)-3\left(x+2\right)=3\left(x-4\right)-2\left(2x+1\right)\)
\(\Leftrightarrow4x-4-3x-6=3x-12-4x-2\)
\(\Leftrightarrow x-10=-x-14\)
\(\Leftrightarrow2x=-14+10\)
\(\Leftrightarrow x=-2\)
Vậy...
tìm x
\(\dfrac{-4}{x-1}\) \(\dfrac{3}{x-1}\) \(\dfrac{2x+1}{x-3}\) \(\dfrac{x+3}{x-2}\)
\(\dfrac{4x-1}{3-x}\) \(\dfrac{3x+3}{x-1}\) \(\dfrac{x-2}{x+3}\) \(\dfrac{2x}{x-2}\)
Tìm x biết
a,2/3.x+1/3=1/5
b,4/5- 5/3.x=-2
c,1/5+5/3:x=1/2
d,5/7:x-3=-2/7
1/tìm x
a)x-2 là ước của 3x-13
b)-15.(x-2) + 7.(3-x)=7
c)(2x+1)^2=6
d)4.(5-x)-3.(1-x)=3^2
Tìm số nguyên x :
1) ( x - 1) . ( y + 1 ) = 5
2) x . ( y + 2 ) = -8
3) xy - 2x - 2y = 0
4) 2x - 5 chia hết cho x - 1
Tìm x sao cho x thuộc tập hợp số nguyên:
1) x - 43 = (35 - x) - 48
2) 305 - x + 14 = 48 + (x + 23)
3) - (x - 6 + 85) = (x + 51) - 54
4) - (35 - x - 37 - x) = 33 - x
5) 13 - | x | = | -4 |
6) | x | - 3 + 6 = 16
7) 35 - | 2x - 1 | = 14
8) | 3x - 2 | + 5 = 9 - x
9) x - ( -25 + 7 ) > 12 - ( 15 - 14 )
10) | 17 + ( x - 15 ) | < 4
11) x2 - 5x = 0
12) | x-9 | . (-8) = -16
13) | 4 - 5x = 24 với x < hoặc = 0
14) x . ( x - 2 ) > 0
15) x . ( x - 2 ) < 0
16) (x-1) . (y+1) = 5
17) x . ( y +2 ) = -8
18) xy - 2x - 2y = 0
19) 2x - 5 chia hết cho x - 1
tìm x , y thuộc Z , biết :
1 . ( x- 2 )72 + ( y +1 )70 = 0
2 . | x + 1 | + | y - 3 | = 0
3 . ( 2x - 10 )100 + ( x - y )102 = 0
4 . | 2x + 8 | + | y + x | = 0
