a) 3(x - 2) + 150 = 204
=> 3(x - 2) = 204 - 150
=>3(x - 2) = 54
=> x - 2 = 54 : 3
=> x - 2 = 18
=> x = 18 + 2
=> x = 20
b) (x - 13) : 5 = 12
=> x - 13 = 12 x 5
=> x - 13 = 60
=> x = 60 + 13
=> x = 73
3 ( x - 2 ) + 150 = 204
\(3\left(x-3\right)=54\)
\(\left(x-3\right)=18\)
\(x=21\)
( x - 13 ) : 5 = 12
\(x-13=60\)
\(x=73\)
24 + 3 ( 5 - x ) =27
\(3\left(5-x\right)=3\)
\(5-x=1\)
\(x=4\)
3 ( x - 2 ) + 150 = 204
<=> x-2=(204-150):3
<=> x-2=18
<=> x=20
( x - 13 ) : 5 = 12
<=> x-13=60
<=> x=73
3 . ( x - 2 ) + 150 = 204
3 . ( x - 2 ) = 204 - 150
3 . ( x - 2 ) = 54
( x - 2 ) = 54 : 3
( x - 2 ) = 18
x = 20
Vậy x = 20
Câu 1:
Ta có : 3(x-2) + 150 = 204
\(\Rightarrow\)3(x-2) = 46
\(\Rightarrow\)x-2 = \(\frac{46}{3}\)= \(15\frac{1}{3}\)
\(\Rightarrow x=2+15\frac{1}{3}=17\frac{1}{3}\)
( x - 13 ) : 5 = 12
( x - 13 ) = 12 . 5
( x - 13 ) = 60
x = 60 + 13 = 73
Vậy x = 73
24 + 3 . ( 5 - x ) = 27
3 . ( 5 - x ) = 27 - 24
3 . ( 5 - x ) = 3
5 - x = 3 : 3
5 - x = 1
=> x = 4
Học tốt
Câu 2:
Ta có:
\((x-13)\div5=12\)
\(\Rightarrow x-13=5\times12=60\)
\(\Rightarrow x=60+13=73\)
Câu 3: bn k ghi kết quả à