3. ( x + 5 ) = 3x + 15
2x + 2.5 = 2. ( x +5 )
( 2x + x ) . 5 = 10x + 5x
3. 4 + 4x = 4. ( 3 + x )
4( x - 2 ) = 4x - 8
2x - 2 . 4 = 2 . ( x - 4 )
Trả lời ( bừa ) :
1, 3 ( x + 5 ) = 3x + 15
2, ( 2 + x ) 5 = 10 + 5x
3, 4 ( x - 2 ) = 4x - 8
4, 2x + 2 . 5 = 2 ( x + 5 )
5, 3 . 4 + 4x = 4 ( 3 + x )
6, 2x - 2 . 4 = 2 ( x - 4 )
Hok tốt
\(3\left(x+5\right)=3x+15\)
\(2x+2.5=2\left(x+5\right)\)
\(\left(2+x\right)5=10+5x\)
\(3.4+4x=4\left(3+x\right)\)
\(4\left(x-2\right)=4x-8\)
\(2.x-2.4=2\left(x-4\right)\)