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1/ 3(x - 2) = 9 => x - 2 = 3 => x = 5
2/ 3(x - 36) = 216 => x - 36 = 72 => x = 108
3/ (x - 3)3 = 33 => x - 3 = 3 => x = 6
4/ 2x = 32 => 2x = 25 => x = 5
5/ 3x - 16 = 2.74 : 73 = 14 => 3x = 30 => x = 10
6/ (6x - 39) : 3 = 201 => 6x - 39 = 603 => 6x = 642 => x = 107
7/ (3x - 15)2 = 81 => (3x - 15)2 = 92 => 3x - 15 = 9 => 3x = 24 => x = 8
8/ 3(x + 4) = 105 => x + 4 = 35 => x = 31
9/ 12x - 43 = 4.84 : 83 = 32 => 12x = 32 : 64 => 12x = 1/2 => x = 1/24
10/ 41 - (2x - 5) = 680 => 2x - 5 = -639 => 2x = -634 => x = - 317
\(\left(12x-4^3\right).8^3=4.8^4\)
\(12x-4^3=4.8^4:8^3\)
\(12x-64=4.8\)
\(12x-64=32\)
\(12x=32+64=96\)
\(x=96:12=8\)
Vậy x=8
\(b.\left(\left(4x+28\right).3+55\right):5=35\)
\(\left(4x+28\right).3+55=35\times5\)
\(\left(4x+28\right).3+55=175\)
\(\left(4x+28\right).3=175-55\)
\(\left(4x+28\right).3=120\)
\(4x+28=120:3=40\)
\(4x=40-28=12\)
\(x=12:4=3\)
Vậy x=3
\(c.720:\left(41-\left(2x-5\right)\right)=2^3.5\)
\(720:\left(41-\left(2x-5\right)\right)=40\)
\(41-\left(2x-5\right)=720:40=18\)
\(2x-5=41-18=23\)
\(2x=23+5=28\)
\(x=28:2=14\)
Vậy x=14
\(d.\left(3x-2^4\right).7^3=2.7^4\)
\(\left(3x-16\right).7^3=2.7^4\)
\(3x-16=2.7^4:7^3\)
\(3x-16=2.7=14\)
\(3x=14+16=30\)
\(x=30:3=10\)
Vậy x=10
Nhớ k cho mình nhé! Thank you!!!
\(4^2x+4^2.10=160\)
\(4^2\left(x+10\right)=160\)
\(16\left(x+10\right)=160\)
\(x+10=10\)
\(x=0\)
vay \(x=0\)
\(\left(12x-4^3\right).8^3=4.8^4\)
\(\left(12x-4^3\right).8^3-4.8^4=0\)
\(\left(12x-64\right).8^3-4.8^4=0\)
\(8^3\left(12x-64-32\right)=0\)
\(12x-96=0\)
\(12x=96\)
\(x=8\)
vay \(x=8\)
a/ 52x-3- 2. 52= 52. 3
52x-3- 2. 25= 25. 3
52x-3- 50= 75
52x-3= 75+ 50
52x-3= 125= 53
2x- 3= 3
2x= 3+ 3
2x= 6
x= 6: 2
x= 3
b/ (12x- 43). 83= 4. 84
12x- 64= (4. 84): 83
12x- 64= 4. 8= 32
12x= 32+ 64
12x= 96
x= 96: 12
x= 8
a <=>12x-4^3=32
<=>12x=96
<=>x=8
b, <=>3x-6=27
<=>3x=33
<=>x=11
c, <=>119-(x-6)=102
<=>x-6=17
<=>x=23
hok tot
a) ( 12x - 43 ) . 83 = 4.84
=> ( 12x - 43 ) : 4 = 84 : 83
=> ( 12x - 43 ) : 4 = 8
=> 12x - 43 = 8 . 4
=> 12x - 64 = 32
=> 12x = 96
=> x = 8
b) ( 3x - 6 ) . 3 = 34
=> ( 3x - 6 ) = 34 : 31
=> 3x - 6 = 33
=> 3x - 6 = 27
=> 3x = 33
=> x = 11
c) 2448 : [ 119 - ( x - 6 ) ] = 24
=> 119 - ( x - 6 ) = 102
=> x - 6 = 7
=> x = 13
a) 100 - 7.(x-5) = 68
7.(x - 5) = 100 - 68 = 32
x - 5 = \(\frac{32}{7}\)
x = \(\frac{32}{7}+5=\frac{67}{7}\)
b) 2(x-6)+2227:17=151
2( x -6) + 131 = 151
2 (x - 6) = 20
x - 6 = 20 : 2 = 10
x = 10 + 6 = 16
(12x-43).83=4.84
=> 12x-43=4.84:83
=> 12x-64=4.8
=> 12x-64=32
=> 12x=32+64
=> 12x=96
=> x=96:12
=> x=8
(3x-24).73=2.74
=> 3x-24=2.74:73
=> 3x-16=2.7
=> 3x-16=14
=> 3x=14+16
=> 3x=30
=> x=10
2x+2x+4=272
=> 2x.(1+24)=272
=> 2x.(1+16)=272
=> 2x.17=272
=> 2x=16
=> 2x=24
=> x=4