1/ 2x + 4 =14
2/ 50 – ( 4x – 6 ) = 24
3/ 25 – ( 4x – 20 ) = 5
4/ 37 – 5x = 2
5/ 4³ – 2³ + 6 x 3 – ( 5 + 3 )²
6/ (2³ – 1)² + 3² – 2³
1/ 2x + 4 =14
2/ 50 – ( 4x – 6 ) = 24
3/ 25 – ( 4x – 20 ) = 5
4/ 37 – 5x = 2
5/ 4³ – 2³ + 6 x 3 – ( 5 + 3 )²
6/ (2³ – 1)² + 3² – 2³
Câu hỏi mới
⇔$2x=10$
⇒$x=5$
$2,$ $50 – ( 4x – 6 ) = 24$
⇔$-4x+6=26$
⇔$-4x=20$
⇔$-4x+20=20$
⇔$-4x=0$
⇒$x=0$
$4,$ $37 – 5x = 2$
⇔$-5x=35$
⇒$x=-7$
$5,$ $4^3 – 2^3+ 6 × 3 – ( 5 + 3 )^2$
$=56+18-64$
$=10$
$6,$ $(2^3 – 1)^2+ 3^2 – 2^3$
$=49+9-8$
$=50$