\(\frac{3}{4}x-\frac{5}{7}=\frac{3}{5}x+\frac{1}{2}\)
\(\Leftrightarrow\frac{3}{4}x-\frac{3}{5}x=\frac{1}{2}+\frac{5}{7}\)
\(\Leftrightarrow x.\left(\frac{3}{4}-\frac{3}{5}\right)=\frac{17}{14}\)
\(\Leftrightarrow x.\frac{3}{20}=\frac{17}{14}\)
\(\Leftrightarrow x=\frac{170}{21}\)
Tìm STN x, biết
1) (x + 2) - 2 = 0 2) (x + 3) + 1 = 7
3) (3x - 4) + 4 = 12 4) (5x + 4) - 1 = 13
5) (4x - 8) - 3 = 5 6) 3 + (x - 5) = 7
7) 8 - (2x - 4) = 2 8) 7 + (5x + 2) = 14
9) 5 - (3x - 11) = 1 10) 16 - (8x + 2) = 6
Tìm x (7-3x-2)(5x-3-4x)=4-5(1-x)
Tìm số tự nhiên x biết:
(x+2)-2=0
(x+3)+1=7
(3x-4)+4=12
(5x+4)-1=13
(4x-8)-3=5
8-(2x-4)=2
7+(5x+2)=14
5-(3x-11)=1
Giúp e vs ạ(Vui lòng trình bày ạ)
Bài 1: Tìm x biết :
a) (x+2)^2 - (3x-7)^2=0
b) (4x+1) -(5x-3)^2=0
c) 25(x-3)^2 - 49(2x+1)^2=0
d) 9(3x-2)^2=121(1-4x)^2
e) (x-5/4)^2=(5x+1/2)^2
Tìm x biết
a) 7/4x-5=10/3
b) x/3 : 1/4=12/5
c)1/3x + 2/5x =37/30
Tìm x
1) 5x - 16 = 40 + x
2) 4x - 10 = 15 - x
3) 3x - 6 = 5x + 2
4) 15 - x = 4x - 5
5) x - 15 = 6 + 4x
6) -12 + x = 5x - 20
7) 7x - 4 = 20 + 3x
8) 5x - 7 = -21 - 2x
9) x + 15 = 20 - 4x
10) 17 - x = 7 - 6x
Giúp mình v
Bài10872917292872917 tìm x bt
5x-16=40+x
4x-10=15-x
-12+x=5x-2
7x-4=20+3x
5x-7=20+3x
x+15=7+6x
17-x=7-6x
3x+(-21)=12-8x
125:(3x-13)=25
541+(218-z)=735
3(2x+1)-19=14
175-5(x+3)=85
4x-40=|4|+12
x+15=20-4x
8x+|-3|=-4x+39
6(x-2)+(-2)=20-4x
Tìm x
1) I 3x - 7 I = 2
2) ( 5x - 10 )2 = 100
3) ( -4x + 5 )3 = -27
4) 2004( x - 1 ) ( x + 2 ) = 1
5) 4 ( x + 5 ) + x + 20 = -500
6) 3( x + 15 ) + 2( x + 5 ) = - 175
7) 2( 7 - x ) + 5( 14 - x ) = -136
Tìm x, biết:
a) |2x+1| = |1-x|
b) |5x-4| = |x+2|
c) |2x-3| - |3x+2| =0
d) |2+3| = |4x-3|
e) |5/4-7/2| - |5/8x+3/5| =0
