x-55=155+45
155+45
45+155
55:5
155+45=200
45+155=200
55:5=11
ủng hộ mk nha
155 + 45 = 200
45 + 155 = 200
55 : 5 = 11
ủng hộ mk nha
7 [ x + 5 ] - 20 = 190 155 - 10 [ x + 1 ]= 55
6 [ x + 2 mũ 3 ] + 40 = 100 15x - 133 = 17
90 [ x + 2 ] = 45 14x + 54= 82
17x - 20 =14
A, 7[x + 5] - 20 = 190
7x + 35 - 20 = 190
7x + 15 = 190
7x = 175
x = 25
B, 155 - 10[x + 1] = 55
155 - 10x - 10 = 55
-10x + 90 = 55
-10x = -35
x = 3.5
C, 6[x + 2^3] + 40 = 100
6[x + 8] + 40 = 100
6x + 48 + 40 = 100
6x + 88 = 100
6x = 1
2 x = 2
D, 15x - 133 = 17
15x = 150
x = 10
E, 90[x + 2] = 45
90x + 180 = 45
90x = -135
x = -1.5
F, 4x + 54 = 82
4x = 28
x = 7
G, 17x - 20 = 14
17x = 34
x = 2
95-5(x+2)=45
14x + 54 =82
15x-133=17
155-10(x+1)=55
các bạn làm đủ hộ nha
a. 95 - 5.(x + 2) = 45
5.(x + 2) = 95 - 45
x + 2 = 50 : 5
x = 10 - 2
x = 8
b. 14x + 54 = 82
14x = 82 - 54
x = 28 : 14
x = 2
c. 15x - 133 = 17
15x = 17 + 133
x = 150 : 15
x = 10
d. 155 - 10.(x + 1) = 55
10.(x + 1) = 155 - 55
x + 1 = 100 : 10
x = 10 - 1
x = 9
\(95-5\left(x+2\right)=45\) \(14x+54=82\)
\(5\left(x+2\right)=95-45\) \(14x=82-54\)
\(5\left(x+2\right)=50\) \(14x=28\)
\(x+2=50:5\) \(x=28:12\)
\(x+2=10\) \(x=2\)
\(x=10-2\)
\(x=8\) \(155-10\left(x+1\right)=55\)
\(10\left(x+1\right)=155-55\)
\(15x-133=17\) \(10\left(x+1\right)=100\)
\(15x=133+17\) \(x+1=100:10\)
\(15x=150\) \(x+1=10\)
\(x=150:15\) \(x=10-1\)
\(x=10\) \(x=9\)
Tìm STN x biết.
70 - 5. (X-3) = 45
12+ (5+x) = 20
130-( 100+x) = 25
175 + (30 - x) = 200
5(x + 12) + 22 = 92
95-5(x+2) = 45
14x +54 = 82
15x -133 = 17
155-10(x + 1) = 55
1) 70 - 5( x - 3 ) = 45
5( x - 3 ) = 70 - 45
5( x - 3 ) = 25
x - 3 = 25 : 5
x - 3 = 5
x = 5 + 3
x = 8
2) 12 + ( 5 + x ) = 20
5 + x = 20 - 12
5 + x = 8
x = 8 - 5
x = 3
3) 130 - ( 100 + x ) = 25
100 + x = 130 - 25
100 + x = 105
x = 105 - 100
x = 5
4) 175 + ( 30 - x ) = 200
30 - x = 200 - 175
30 - x = 25
x = 30 - 25
x = 5
5) 5( x + 12 ) + 22 = 92
5( x + 12 ) = 92 - 22
5( x + 12 ) = 70
x + 12 = 70 : 5
x + 12 = 14
x = 14 - 12
x = 2
6) 95 - 5( x + 2 ) = 45
5( x + 2 ) = 95 - 45
5( x + 2 ) = 50
x + 2 = 50 : 5
x + 2 = 10
x = 10 - 2
x = 8
7) 14x + 54 = 82
14x = 82 - 54
14x = 28
x = 28 : 14
x = 2
8) 15x - 133 = 17
15x = 17 + 133
15x = 150
x = 150 : 15
x = 10
9) 155 - 10( x + 1 ) = 55
10( x + 1 ) = 155 - 55
10( x + 1 ) = 100
x + 1 = 100 : 10
x + 1 = 10
x = 10 - 1
x = 9
Có ai muốn vô team của mình ko ạ!Mình sẽ tick cho tiện thể cho mình hỏi:
35+40+45+50+55+.......155. Tính tổng
Mk gia nhập nha "no" cần k nha mk ko thích đâu.
155 - 10 .( x+1 ) = 55
155 - 10 .( x+1 ) = 55
155 - 55 = 10 ( x + 1 )
100 = 10 ( x + 1 )
100 : 10 = x+ 1
10 = x + 1
10 - 1 = x
9 = x
Vậy x = 9
155-10(x+1)=55
10(x+1)=155-55
10(x+1)=100
x+1=100/10
x+1=10
x=9
155 - 10 .( x+1 ) = 55
10(x+1)=155-55
10(x+1)=100
x+1=100:10
x+1=10
x =10-1
x =9
155-10(x+1)=55
giúp mình
\(155-10\left(x+1\right)=55\\ \Rightarrow10\left(x+1\right)=155-55\\ \Rightarrow10\left(x+1\right)=100\\ \Rightarrow x+1=100:10\\ \Rightarrow x+1=10\\ \Rightarrow x=10-1\\ \Rightarrow x=9\)
`155-10(x+1)=55`
`10(x+1)=155-55`
`10(x+1)=100`
`x+1=100:10`
`x+1=10`
`x=10-1`
`x=9`
\(155-10\left(x+1\right)=55\)
\(10\left(x+1\right)=155-55\)
\(10\left(x+1\right)=100\)
\(x+1=100:10\)
\(x+1=10\)
\(x=10-1\)
\(x=9\)
Tìm số tự nhiên x, biết
(x + 55) - 155 = 0
\(\Rightarrow x+55=155\Rightarrow x=100\)
724 +63 + 276 + 27=
2079+ 186+ 921 =
13579 +5468+ 523+421=
45 + 28 + 55 + 72=
2548+ 642 +452 =
14 + 187 + 86+213 =
45+178 + 622+ 155 =
234 + 462 + 66 + 38 =
583 +999+ 417=
512+7485+ 515 + 48=
do la tinh bang cach thuan tien nhat nhe