1/4 . x - (x - 4/5) - 1/2 = 2x - 6
1/4 x - x + 4/5 - 1/2 = 2x - 6
1/4 x - x - 2x = -6 - 4/5 + 1/2
-11/4 x = -63/10
x = -63/10 : (-11/4)
x = 126/55
a)3/4+1/4xX=1/2+1/2xX
b) (x+2)/0.5=(2x+1)/2
7, Tìm x
a) \(\dfrac{1}{4}-\left|x+\dfrac{1}{2}\right|=\dfrac{1}{8}\) b) |2x-5|=x+3
c) |2x+1|-2x=6 d) |x-5|+x=5
Bài 2 Tìm x biết 1, (2x-2).(3x+1)-(3x-2).(2x-3)=5 2,(1-3x).(3x-5)-(2x-4)(2-3x)=x-6 3,(2x-1).(4x^2+2x+1)-(2x+1)(4x^2-2x+1)=5x+6 Giúp tớ với
Tìm x biết :
a, 4.(18 - 5x) - 12.(3x - 7) = 15.(2x - 16) - 6(x + 14)
b, 5.(3x + 5) - 4.(2x - 3) = 5x + 3.(2x + 12) + 1
c, 2.(5x - 8) - 3.(4x - 5) = 4.(3x - 4) + 11
d, (3x + 2)(2x + 9) - (x + 2)(6x + 1) = (x + 1) - (x - 6)
e, (8x - 3)(3x + 2) - (4x + 7)(x + 4)= (2x + 1)(5x - 1) - 33
Tìm x để biểu thức nhận giá trị âm
2, 2x . (x+1)
3, 5x - x^2
4, (x+3) . (1-2x)
5, (x - 2/5) (x + 3/7) (x +3/4)
6, (x + 3/5) (x - 2/3) (2x +1
tìm Min: a,|2x+1|+|2x+2|+|2x+3|+|2x+4|
b,|x-2|+|x-3|+|x-4|+|x-5|+|x-6|
c,|x-2|+|x-3|+|x-4|+|x-10|
d,|x+1|+|x+2|+|x+3|+|x+4|+|x+5|+|x+6|
giúp mình nha, mình cần gấp lắm
1) tìm số nguyên x để 4x-6/ 2x+1
2) Tìm x thuộc z để: 3.(x - 3).(x + 5)< 0
3 tìm x
1/3-(2/3-x + 5/4= 7/12 -(5/2 - 13/6)
a)tìm x,y biết:x-1/y+2 và x+y=23
b)tìm x biết: 4^5+4^5+4^5+4^5/3^5+3^5+3^5.6^5+6^5+6^5+6^5+6^5+6^5/2^5+2^5=8^2x-6
Tìm x : 1/1-x +-2/3(3/4-6/5)=5/2-2x
