4x-2.16=1.2              ( x+3 )除以2=6           4x+1.2乘5=24.4             8x-5x=27         7.2( x-4.3 )=36x+0.6=7.2                 怎么算?

1、0.84 2、9 3、 7.6 4、 9 5、 9.3 6、6.6

4x-2.16=1.2 ( x+3 )除以2=6 4x+1.2乘5=24.4
4x =1.2+2.16 x+3 =2*6 4x+6 =24.4
4x =3.36 x+3 =12 4x =24.4-6
x =3.36/4 x =12-3 4x =18.4
x =0.84 x =9 x =4.6
8x-5x=27 7.2( x-4.3 )=36 x+0.6=7.2
3x =27 7.2x-7.2*4.3 =36 x =7.2-0.6
x =27/3 7.2x-30.96 =36 x =6.6
x =9 7.2x =36+30.96
7.2x =66.96
x =66.96/7.2
x =9.3

4x-2.16=1.2 ( x+3 )除以2=6 4x+1.2乘5=24.4
4x=2.16+1.2 ( x+3 )除以2乘2=6乘2 4x+6=24.4
4x=3.26 x+3-3=12-3 4x+6-6=24.4-6
x=0.815 x=9 4x=18.4
x=4.6
8x-5x=27 7.2( x-4.3 )=36 x+0.6=7.2
3x=27 7.2x-4.3乘7.2=36 x+0.6-0.6=7.2-0.6
x=9 7.2x-30.96+30.96=36+30.96 x=6.6
7.2x=66.96
x=9.3

0.84 9 7.6 9 9.3 6.6

1、0.84 2、9 3、 7.6 4、 9 5、 9.3 6、6.6