6.4x-3.5=3.6x+2.1

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6.4x-3.5=3.6x+2.1

6.4x-3.5=3.6x+2.1
6.4x-3.5=3.6x+2.1

6.4x-3.5=3.6x+2.1
6.4x-3.5=3.6x+2.1
6.4x-3.6x=2.1+3.5
2.8x=5.6
x=2

不明白可追问,祝学习进步!

6.4x-3.5=3.6x+2.1
6.4x-3.6x=2.1+3.5
2.8x=5.6
x=5.6÷2.8
x=2
有不明白的可以追问!谢谢!!
祝学习进步

6.4x-3.5=3.6x+2.1 移项
(6.4-3.6)x=2.1+3.5 化简
2.8x=5.6
x=5.6/2.8
x=2

6.4x-3.6x=2.1+3.5
2.8x=5.6
x=2

6.4x-3.5=3.6x+2.1
移项
6.4x-3.6x=2.1+3.5
合并同类项
2.8x=5.6
x的系数化为1
x=56/28
x=2