4x+2x=9.6
( )=9.6
( )=( )
x=( )
3x+1.5=2.1
3x+1.5( )=( )
3x =( )
3x÷3=( )
▲3x+5=10.1 4.3x-2.9x=9.8 2(x-5)=8.6