Các câu hỏi tương tự
2\(^7\) + ( x - 3\(^7\) ) = 5\(^7\) - 4\(^7\)
3 \(^x\) - (x + 2 \(^x\)) = 7
7 \(^2\) - (15 + x) = 5.2 \(^2\)
7 \(^3\) - 7(13 - x) = 14
Tìm số hữu tỉ x
a) x/2 - (3x/5 - 13/5 ) = - (7/5 + 7/10 .x)
b) 2/3x - 3/12 = 4/5 - (7/x - x)
c) 3 - 2/2x -3 = 2/5 - 2/9-6x - 3/2
tìm x
a, 11/13 -( 5/42 - x) = - (15/28 - 11/13)
b, x +1/3 = 2/5-(-1/3)
c, 2/3 x +5/7 =3/10
d, 3/7-x = 1/4 - (-3/5)
e, -21/13 x + 1/3 = -2/3
Bài 1 Tính
a, 12/21-3/7+-2/3
b,(-25/13)+(-9/17)+12/13+(-25/17)
c,5/9.7/13+5/9.9/13-5/9.3/13
Bài 2 tìm x
a,2/3x+5/7=3/10
b,x:5/2-1/2=-2/3
c,|x-3/4|-1/2=0
Bài 1:
a,11/125-17/18-5/7+4/9+17/14
b,(7+7/5-2/3)-(4+4/5+3/8)+(3-3/5+2/3+3/8)
c,-13/25.5/32.23/-13.(-64)
Bài 2:
a,11/13-(3/42-x)=-(13/28-11/13)
b,x2/3x+5/7=3/10
c,x-21/13x+1/3=-2/3
\(b,\dfrac{x}{2}-\left(\dfrac{3x}{5}-\dfrac{13}{5}\right)=-\left(\dfrac{7}{5}+\dfrac{7}{10}.x\right)\)
\(c,\dfrac{2x-3}{3}+\dfrac{-3}{2}=\dfrac{5-3x}{6}-\dfrac{1}{3}\)
\(d,\dfrac{2}{3x}-\dfrac{3}{12}=\dfrac{4}{5}-\left(\dfrac{7}{x}-2\right)\)
\(e,2\left(x-1\right)=\left(x-1\right)^2\)
Tìm x
a) -3/2 - 2x + 3/4 = -1
b) ( -2/3 x - 3/5 ) . ( 3/-2 - 10/3 ) = 2/5
c) x/2 - ( 3x/5 - 13/5 = -( 7/5 + 7/10 )
d) 2x-3/3 + -3/2 = 5-3x/6 - 1/3
Ai biết câu nào giải trước giúp e, em cảm ơn
Bài 1: thực hiện phép tính
a, (3/8 + -3/4 + 7/12) : 5/6 + 1/2
b, -7/3. 5/9+ 4/9. (-3/7)+ 17/7
c,117/13 - (2/5 + 57/13)
d, 2/3 - 0,25 : 3/4 + 5/8 .4
Bài 2: tìm x biết
a, 2/3 x - 1/2 = 1/10
b, -2/3 -1/3 (2x -5) = 3/2
c, (3x -1) (-1/2 x + 7) =0
d, 17/2 - | 2x - 3/4 | =-7/4
e, (x + 1/25) +17/25 = 26/25
Tính
a, 4^5 x 3^2 + 2^10 - 2^3 x 30
b,(2/5) + 5/1/2 x (4,5 - 2) + 2^3/-4
tìm x
37 - x/3 = x - 13/7