x+1/3=2/5-(-1/3)
<=>x+1/3=2/5+1/3
<=>x=2/5+1/3-1/3
<=>x=2/5
\(x+\frac{1}{3}=\frac{2}{5}+\frac{1}{3}\)
\(\Rightarrow x=\frac{2}{5}\)( vì có chung 1/3)
**** ^^, tks
a,1/3 .(x-2/5)=3/4 b, 7/3:(x-2/3)=4/5 c,1/3.(x-2/5)=4/5 d, 2/3.(x-1/2)-1/4.(x-2/5)=7/3 e,3/7 .(x-2/3)+1/2=5/4.(x-2) f,1/2.(x-3)+1/3.(x-4)+1/4.(x-5)=1/5 g,[2/3.(x-1/2)-4/5]:(x-1/3)=21/5 h, {x-[1/2.(x-3)+11/5]}:(x-1/2)=3/5 i,x.(x-2/5)-(x+2).x+11/4=4/3
Tìm x
a, ( 3 . x -1 ) . ( -1/2 .x + 5 ) = 0
b, 3. ( x - 1/2 ) - 5 ( x + 3 /5 ) = x + 1 /5
c, -5 . ( x + 1/5 ) - 1/2 . ( x - 2/3 ) = 3/2 . x - 5/6
d,3. ( 3 . x - 1/2 ) mũ 3 + 1/9 = 0
1. 3/2 x 4/5 - x = 2/3
2.x x3 1/2=3 1/3 : 4 1/4
3. 5 2/3:x = 3 2/3- 2 1/2
4. 3/2+1/2:x=3 1/2
5.3/4 x x - 1/5=1/5:1/8
Tìm x
1) -5(x + 1/5) - 1/2(x -2/3) = 3/2x - 5/6
2) 3(x - 1/2) - 5(x + 3/5) = -x + 1/5
3) 3(3x - 1/2)3 + 1/9 = 0
4) 60% .x + 2/3x =1/3 . 6/1/3
Tìm x:
Bài 3:
a) 1/3 + 2/3 : x = -7
b) 3 1/2 - 1/2 x = 2/3
c) [(x + 1/3) * 3/4 +5] : 2=3
d) (1 2/3 - x). 0,75 - 2 = 1/2
e) x + 75% x = -1,6
f) (x - 2/3) (2x+1) = 0
g) 1 - (2x + 1/2) 2 = 3/4
h) 5/1.6 + 5/6.11 + ... + 5/(5x + 1).(5x + 6) = 2020/2021
Giúp mình bài 3 với, ai làm được đúng hết mình sẽ tik hết nhé! Hurry up!
tìm x
a) X x 3/4 = 1/5 b) 3/7 x X = 2/5 c) 1/3 + 2/9 = 2/12 x X
d) 4/15 x X - 2/3 = 1/5 e) x : 1/7 = 2/3 f) 1/9 : x = 7/3 j) 1/4 + 5/12 = 8/3 : x
h) 7/4 : X - 1/2 = 1/5
Tìm x
a) 1/3x + 2/5( x - 1 ) = 0
b) (2x - 3 )(6 - 2x ) =0
c) 2|1/2x - 1/3 | - 3/2 = 1/4
d) 3/4 - 2 . | 2x - 2/3 | = 2
e) ( 3x - 1)(-1/2x + 5 ) = 0
g)-5(x + 1/5 ) - 1/2(x - 2/3 ) = 2/3x - 5/6
h) 3(x - 1/2 ) - 5(x + 3/5 ) = -3 + 1/5
i) 60%x + 2/3x = 1/3. 6và1/3 ( 6và1/3 là hỗn số )
a,-2\3x+1\5=1\10
b,2|1\2x-3\8|-3\2=1\4
c,-5(x+1\5)-1\2(x-2\3)=3\2x-5\6
d,3(x-1\2)- 5(x+3\5)=-x+1\5
e,3\4-2.|2x-0,125|=2
f,2|1\2x-1\3|-3\2=1\4
g,4\5-1\2x=1\10
1) 2³ .x -5² x = 2( 5² + 2² ) -33. 2) 15÷ ( x +2) = (3³ +3) ÷1
3) 20÷ (x +1) = (5² +1 ) ÷13. 4) 320÷ ( x -1 ) = (5³ - 5² ) ÷4 +15
5) 240 ÷ ( x -5 ) = 2² .5² -20. 6) 70 ÷ ( x -3) = ( 3⁴ -1) ÷ 4 - 10
Giúp mình với mình Tối nay mình đi học rồi
