0.3(x-2)+3=4.2解方程

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0.3(x-2)+3=4.2解方程

0.3(x-2)+3=4.2解方程
0.3(x-2)+3=4.2解方程

0.3(x-2)+3=4.2解方程
0.3(x-2)+3=4.2
0.3x-0.6+3=4.2
0.3x+2.4=4.2
0.3x=4.2-2.4
0.3x=1.8
x=6

0.3(x-2)+3=4.2
0.1(x-2)+1=1.4
x-2=4
x=6

0.3x-0.6+3=4.2
0.3x=1.8
x=6

0.3(x-2)+3=4.2 =>
0.3(x-2)=1.2 =>
x-2=4 =>
x=6

0.3(x-2)+3=4.2
1、0.3(x-2)=4.2-3=1.2
2、x-2=1.2/0.3=4
3、x=4+2=6

0.3(x-2)+3=4.2
0.3(x-2)=4.2-3
0.3(x-2)=1.2
x-2=1.2/0.3
x-2=4
x=4-2
x=2

0.3(x-2)+3=4.2
0.3x-0.6+3=4.2
0.3x =1.8
x=6