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
\(95-5\left(x+2\right)=45\) \(14x+54=82\)
\(5\left(x+2\right)=95-45\) \(14x=82-54\)
\(5\left(x+2\right)=50\) \(14x=28\)
\(x+2=50:5\) \(x=28:12\)
\(x+2=10\) \(x=2\)
\(x=10-2\)
\(x=8\) \(155-10\left(x+1\right)=55\)
\(10\left(x+1\right)=155-55\)
\(15x-133=17\) \(10\left(x+1\right)=100\)
\(15x=133+17\) \(x+1=100:10\)
\(15x=150\) \(x+1=10\)
\(x=150:15\) \(x=10-1\)
\(x=10\) \(x=9\)
95 - 5( x + 2 )= 45
5 ( x + 2 ) = 45 + 95
5 ( x + 2 ) = 140
x + 2 = 140 : 5
x + 2 = 28
x = 28 - 2
x = 26
14 x + 54 = 82
14 x = 82 - 54
14 x = 28
x = 28 : 14
x = 2
15 x - 133 = 17
15 x = 17 + 133
15 x = 150
x = 150 : 15
x = 10
155 - 10 ( x + 1 ) = 55
10 ( x + 1 ) = 55 + 155
10 ( x + 1 ) = 210
x + 1 = 210 : 10
x + 1 = 21
x = 21 - 1
x = 20
- k đúng cho mk nhé , mk đã dành cả thời gian cho bn r
