c) \(36:4-2x=3\)
\(9-2x=3\)
\(2x=6\)
\(x=3\)
Vậy x=3
d) \(\left(3x-15\right).2=20\)
\(3x-15=10\)
\(3x=45\)
\(x=15\)
Vẫy=15
c) ( 36 : 4 ) - 2x = 3
9 - 2x = 3
2x = 6
x = 3
d) ( 3x - 15 ) . 2 = 20
3x - 15 = 10
3x = 25
x = 25/3
sorry bài d mình sai rồi nhìn 10 cứ ra 30
#)Giải :
d )\(\left(3x-15\right).2=20\)
\(\Leftrightarrow3x-15=10\)
\(\Leftrightarrow3x=25\)
\(\Leftrightarrow x=\frac{25}{3}\)
c) 36 : 4 - 2x = 3
9 - 2x = 3
2x = 6
x = 3
Vậy : x =3
d) ( 3x-15 ).2 =20
3x - 15 = 10
3x = 25
x = 25/3
Vậy : x =25/3