24 - ( 15 - x ) = 8 + 2x
24 - 15 + x = 8 + 2x
9 + x = 8 + 2x
x = 8 + 2x - 9
x = -1 + 2x
x = -1 + x + x
=> -1 + x = 0
=> x = 0 - ( -1 )
=> x = 1
24 - ( 15 - x ) = 8 + 2x
24 - 15 + x = 8 + 2x
9 + x = 8 + 2x
x = 8 + 2x - 9
x = -1 + 2x
x = -1 + x + x
=> -1 + x = 0
=> x = 0 - ( -1 )
=> x = 1
a, (24 x 15 - 2x) - 1/4 = 400
b, 3200 : (8 + 3x) = 4
Giúp !
Tìm x e Z sao cho :
a) 2x - 7 = 15 - ( 2 - 3x )
b) 8 - ( x + 2 ) + ( 2x - 1 ) = 15 - ( 24 - 85 )
c) -( 4x + 7 ) - ( 5 - 2x ) = 13 - x
1) 10 -3 ( x -1 ) = -5
2) 3x + 75 = -15
3) 4x - 15 = -75 - x
4) 12 - ( x - 7 ) = -8
5) x + 75 = 15
6) x - 18 = 3x + 4
7) 2x + 18 = 10
8) 26 - 3x = 5
9) x - 12 = -15
10) 24 - 2 ( x + 5 ) = 38
11) 25 - 5 ( 3 - x ) = 15
12) x + ( -17 ) = -14
13) -5x - 13 = 47
14) 2x + 36 = -18
15) 9 . ( x + 7 ) - 12 = 24
Ai giải dùm mình nhanh nhất, đúng mình tick cho nha
Tìm x:
a) \(\dfrac{x}{4}=\dfrac{4}{x}\)
b) \(\dfrac{x+7}{15}=-\dfrac{24}{36}\)
c) \(\dfrac{x+1}{8}=\dfrac{2}{x+1}\)
d) \(\dfrac{2x-1}{\left(-3\right)^2}=\dfrac{\left(-3\right)^2}{2x-1}\)
-(x+2) . (2x+4) . (3x+6) . (4x+8)= (-24) . (-15)^16
giúp mình với
Tìm x biết :
29x - 13=45
(168-2x) : 7=24
x chia hết cho 8 và 15<x<60
a, 2.x + 7 = 15
b, 25 – 3.(6 – x) = 22
c, [(2x – 11) : 3 + 1].5 = 20
d, (25 – 2x)3 : 5 – 32 = 42
e, 2 . 3x = 10 . 312 + 8 . 274
g, x – 12 = (–8) + (–17)
h, 7 – 2x = 18 – 3x
i, 3(x + 5) – x – 11 = 24
a) x/12=-1/24-1/8
b) 2/3x=1/2x+15/12
c) |3/4-2x|+1/6=9/2
Giúp em với ạ
Tìm x
a) 15 - 3 . (-6 ) - 2x = 4. ( -2 ) + 3x - 3^2
b ) -8 + 30 . ( x + 2 ) - 6 . ( x - 5 ) - 24 =10
Giúp mk !!!