0.72×3-7x=0.06解方程0.72×3-7x=0.062.16-7x=0.062.16-7x+2.16=0.06+2.167x=2.227x÷7=2.22÷7x=?0.72×3=2.160.06+2.16=2.222.22÷7=?

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0.72×3-7x=0.06解方程0.72×3-7x=0.062.16-7x=0.062.16-7x+2.16=0.06+2.167x=2.227x÷7=2.22÷7x=?0.72×3=2.160.06+2.16=2.222.22÷7=?
0.72×3-7x=0.06解方程
0.72×3-7x=0.06
2.16-7x=0.06
2.16-7x+2.16=0.06+2.16
7x=2.22
7x÷7=2.22÷7
x=?
0.72×3=2.16
0.06+2.16=2.22
2.22÷7=?

0.72×3-7x=0.06解方程0.72×3-7x=0.062.16-7x=0.062.16-7x+2.16=0.06+2.167x=2.227x÷7=2.22÷7x=?0.72×3=2.160.06+2.16=2.222.22÷7=?
0.72×3-7x=0.06
2.16-7x=0.06
7x=2.16-0.06
7x=2.1
x=0.3