109 x 1 - 9 =?
134 x 1 - 34 =?
34 x 2 =?
134 - 34:(x+ 2) =132
134 - 34 :(x+2)=132
34:(x+2)=134-132
34:(x+2)=2
x+2 = 34:2
x+2 = 17
x = 17-2
x = 15
-12+(x-9)=0
13-(x-5)=8
134-5(x+4)=34
4-(27-3)=x-(13-4)
a)-12+(x-9)=0
(x-9) = 12
x = 21
b) 13-(x-5)=8
(x-5) = -5
x = 0
c)134-5(x+4)=34
(x + 4 ) = 20
x = 16
d)4-(27-3)=x-(13-4)
-20 = x - 9
x = -11
Bài 1: Tìm số tự nhiên x sao cho:
1+2+3+4+..........+x= aaa
Bài 2: Tìm x biết:
a) x + 17 = 109
b) x + 34 = 56 + 42 + 43
c) 2x + 45 = x + 94
d) x + 109 = 1 + 2+3 + .........+ 99
Các bạn giúp mình với!
Bài 2:a, x+17=109
x =109-17
x =92
b,x+34=56+42+43
x+34=141
x =141-34
x =107
c,2x+45=x+94
2*x =x+94-45
x+x =x+49
suy ra x=49
d,x+109=1+2+3+........+99
x+109=495
x =495-109
x =386
Bài 1 mik ko có làm được.
1. 13-(x-5)=8 8. (x-5)^6=(x-5)^8
2. 8-(x-10)=23-(-4+12) 9. (3-x).(x-3)=0
3. 134-5(x+4)=34 10. -32-(x-5)=0
4. |5-x|=7
5. 20+8.(x+3)=5^2.4
6. 42x=39.42-37.42
7. |x|=2-(-7)
Bỏ ngoặc rồi tính: 1. (56+47)-(56-53+40) 2. (34+59)-(34-41-100) 3. (109+34)-(109-66+10)
1.\(=56+47-56+53-40\)
\(=\left(56-56\right)+\left(47+53\right)-40\)
\(=0+100-40=60\)
2.\(34+59-34+41+100\)
\(=\left(34-34\right)+\left(59+41\right)+100\)
\(=0+100+100=200\)
3.\(=109+34-109+66-10\)
\(=\left(109-109\right)+\left(34+66\right)-10\)
\(=0+100-10=90\)
1-2-2-1-2-1-2-1-2-1--45-4356-42-------32423432---5-45-54535-435-34-5-35-2-5-4-52-5-54-353--3-5--5-34-5-3--4-47-87-8-787-9-76-8--34-54-6----34-3-31-4-31-423-34-1-134-41-4232-431-321------------546-3----------------2315-413-513465146-456-4-164-316361-4363411111111111111=
-4.3634111e+18
HT
@acquybemon
tìm x
a/96-3(x+1)=42
b/2.x-18=20
c/134-5.(x+4)=34
dấu chấm là dấu nhân nhìn thật kĩ giúp mình nhé love you
\(\text{a/96-3(x+1)=42}\)
\(3\left(x+1\right)=54\)
\(x+1=54:3\)
\(x+1=18\)
\(\Rightarrow x=17\)
\(\text{b/2.x-18=20}\)
\(2x=38\)
\(x=38:2\)
\(x=19\)
\(\text{c/134-5.(x+4)=34}\)
\(5\left(x+4\right)=100\)
\(x+4=100:5\)
\(x+4=20\)
\(\Rightarrow x=16\)
học tốt
tìm x
a/96-3(x+1)=42
b/2.x-18=20
c/134-5.(x+4)=34
dấu chấm là dấu nhân nhìn thật kĩ giúp mình nhé love you
a) 96-3(x+1)=42
3(x+1)=96-42
3(x+1)=54
x+1=54:3
x+1=18
x=18-1
Vậy x=17
b) 2x-18=20
2x=20+18
2x=38
x=38:2
x=19
Vậy x=19.
c) 134-5(x+4)=34
5(x+4)=134-34
5(x+4)=100
x+4=100:5
x+4=20
x=20-4
x=16
Vậy x=16.
a) 96-3(x+1)=42
3(x+1)=96-42
3(x+1)=54
x+1=54:3
x+1=18
x=18-1
x=17
Vậy x=17
b)2.x-18=20
2.x =20+18
2.x =38
x =38:2
x =19
Vậy x=19
c)134-5.(x+4)=34
5.(x+4)=134-34
5.(x+4)=100
x+4 =100:5
x+4 =20
x =20-4
x =16
Vậy x=16
134-5.(x+4)=34
134 - 5. ( x + 4 ) = 34
5 . ( x + 4 ) = 134 - 34
5 . ( x + 4 ) = 100
( x + 4 ) = 100: 5
( x + 4 ) = 20
x = 20 - 4
x = 16
134 - 5(x+4) = 34
=> 134 - 5x - 20 = 34
=> 114 - 5x = 34
=> 5x = 114 - 34
=> 5x = 80
=> x= 16
5(x+4) = 134-34
5(x+4) = 100
(x+4) = 100 : 5
x+4 = 20
x = 20-4
x = 16