Ôn tập toán 7
Các câu hỏi tương tự
a) 0,25(x+1/2) + 3/4 + x= 1/2
B) 1/2 ÷(x+7/5)-1/5=0.75
C) 2x^2 + 4x= 0
D) x^2 + 4x = 0
7) | 1/4x - 3/4| = 4/ 5 x- 2/5
8) | 2x-1| =x
9) | x+ 2| = 2x
7) | 1/4x - 3/4| = 4/ 5 x- 2/5
8) | 2x-1| =x
9) | x+ 2| = 2x
a) |2x-1|=x+3
b) |4x+7|=2x+5
c) x2-3|x|+2=0
d) \(\sqrt{x^2+6x+9}=\left|2x-1\right|\)
f) \(\left|4x-17\right|=x^2-4x-5\)
Tìm x
5-2|x+7|= 4x-1
Tìm x
5-2|x+7|= 4x-1
Bài 1:tìm x
a)2-|3/2x - 1/4 |=|-1,25|
b)3/5+4/5.|x-3/4|=7/4
c)6,5-9/4:|x+1/3|=2
d)11/4+3/2:|4x-1/5|=7/2
e)15/4-2,5:|3/4x+1/2|=3
g)21/5+3:|x/4-2/3|=6
giúp mk nha làm câu nào cg đc
Bài 1:tìm x
a)2-|3/2x - 1/4 |=|-1,25|
b)3/5+4/5.|x-3/4|=7/4
c)6,5-9/4:|x+1/3|=2
d)11/4+3/2:|4x-1/5|=7/2
e)15/4-2,5:|3/4x+1/2|=3
g)21/5+3:|x/4-2/3|=6
giúp mk nha làm câu nào cg đc
tìm x
a)|5/4x-7/2|-|5/8x+3/5|=0
b)|2x-5|=x+1
c)|3x-2|-1=x
d)|3/5x-7|-2x=1
e)|7-2x|+7=2x
làm câu nào cũng đc nha