100 - 7 . ( x - 5 ) = 58
7. ( x - 5 ) = 100 - 390625
7 . ( x - 5 ) = -390525
x - 5 = 7 : -390525
x - 5 =
100 - 7 . ( x - 5 ) = 58
7. ( x - 5 ) = 100 - 390625
7 . ( x - 5 ) = -390525
x - 5 = -390525 : 7
x - 5 =
100 - 7 . ( x - 5 ) = 58
7. ( x - 5 ) = 100 - 390625
7 . ( x - 5 ) = -390525
x - 5 = 7 : -390525
x - 5 =
100 - 7 . ( x - 5 ) = 58
7. ( x - 5 ) = 100 - 390625
7 . ( x - 5 ) = -390525
x - 5 = -390525 : 7
x - 5 =
-12(x-5)+7(3-x)=5 30(x+2)-6(x-5)-24x=100
(x+1-5)+7(3-x)=5 30(x+2)-6(x-5)-24x=100
(x+1)+(x+3)+(x+5)+........+(x+99)=0
a,-12(x-5)+7(3-x)=5
b,-12x-(-12).5+7.3-7.x=5
c,30(x+2)-6(x-3)-24.x=100
1. -2/9 x 15/17 + -2/9 x 2/17
2. -5/3 x 6/5 + -7/9 x 3/10
3. 15/20 x 7/5 + -9/7 x -6/4
4.-25/13 x 5/19 + -25/13 x 14/19
5 -7/13 x 13/5 + -9/7 x 5/3
6. 27/35 x 5/9 - 2/7 x -7/5
7. 10/13 x 13/5 + {-9/5} x 10/3
8. 100/27 x 9/20 + 40% x 5/3
9. 1,5 x 5/12 + 1/4 x 3/4
10. 2 1/2 x 7/5 + {-9/10} x 2/3
11. X + 45% = 2 1/2 -5/3
12. 80% + X = -5/2 + 3/4
13. 4/25 - X =-5/2 + -3/10
6. 27/35 x 5/9 - 2/7 x -7/5
7. 10/13 x 13/5 + {-9/5} x 10/3
8. 100/27 x 9/20 + 40% x 5/3
9. 1,5 x 5/12 + 1/4 x 3/4
Tìm x biết: a) – 12(x – 5) + 7(3 – x) = 5 b) 30(x + 2) – 6(x – 5) – 24x =100
- 12 . ( x - 5 ) + 7 . ( 3 -x ) = 5
30 . ( x +2 ) - 6 . (x -5 ) - 24x = 100
100 - 7 . ( x-5 ) = 5^8
x*(x+3)=0
-12(x-5)+7(3-x)=5
30(x+2)-6(x-5)-24x=100
Tìm x
a,3.(2x+8)-5x+2=0
b,5.(7-3x)+7.(2+2x)=0
c,-12.(x-5)+7.(3-x)=5
d,30.(x+2)-6.(x-5)-24x=100