a) \(2^4.5^3+20:\left(x-2\right)=2002^3:2002^2\)
\(2000+20:\left(x-2\right)=2002\)
\(20:\left(x-2\right)=2002-2000\)
\(20:\left(x-2\right)=2\)
\(x-2=20:2\)
\(x-2=10\)
\(x=10+2\)
\(x=12\)
Bài 8: tìm x
a) x + 10 = 20
b) 2 . x + 15 = 35
c) 3 ⋅ ( x + 2 ) = 15
d) 10 . x + 15 . 11 = 20 . 10
e) 4 . ( x + 2 ) = 3 . 4
f) 33 x + 135 = 26 . 9
g) 2 . x + 15 + 16 + 17 = 100
h) 2 . (x + 9 + 10 + 11) = 4 . 12 . 25
B1:Tính
a,3.52-16:22
b,22.17-23.14
c,15.141+59.10
d,17.85+15.17-120
e,100-[75-(7-2)]2
g,(23.94+93.45):(92.10-92)
B2:Tìm x
a,420+65.4=(x+175):3+30
b,96-3.(x+1)=42
c,(x-47)-115=0
d,(x-36):18=12
e,2x=16
B3:Tìm x
a,60-3.(x-2)=51
b,4x-20=25:22
c,8.6+288:(x-3)2=50
mk đang càn rất gấp
tìm x
11, (x+3)3 = 125
12, (2x)4 = 16
13, 32 : (3x - 2) = 23
14, 20 - 2(x + 4) = 23
15, 14 ⋮(2.x+3)
16, 30- [4(x - 2)+15] = 3
17, 27 : ( x - 1)= 32
18, (10 + 2x) : 42011= 42013
19, (x + 5) ⋮(x +2)
20,[(8x - 12) : 4].33=36
mong các bạn giúp mình ^^
Tìm số nguyên x:
a) 103 - 57:[-2.(2x-1)2 – (-9)0]= -106
b) -2x + 3.{12 - 2[3x - (20 + 2x) - 4x] + 1}= 45
thực hiện phép tính
\(20023-\left(57-20023\right)\)
Tìm x
1,(-14)+(2x–42)=/-10/×/5/
2,(-100)–/x+20/=-150
3)3x+16=4x–61
4,2(x–5)–3(x+6)=0
tìm x
a) 75 - x = 83 - (35 - 7 )
b) ( x + 45 ) . 67 = 8911
c) 225 : ( x+ 12 ) = 15
d) ( x- 10 ) :10 = 20
e) 128 - 3 ( x + 4 ) = 23
f) [ ( 103 - x ) .12 - 54 ] : 6 = 1
g ) ( x : 23 + 45 ) . 21 = 966
h ) 3x + 2x = 120
i) ( x -2 ) ( x + 3 ) = 0
Tìm x, biết:
a) 24. 53 + 20 : ( x - 2 ) = 20023 : 20022
b) 103 - 10 . ( 16 - 2x ) = 23. 32. 52
Tìm x, biết:
a) 24. 53 + 20 : ( x - 2 ) = 20023 : 20022
b) 103 - 10 . ( 16 - 2x ) = 23. 32. 52
tìm x
a) 23(20-2x)=4.25
b) 32+x=81
