快进来,2x+x/3=4.22x-4/3=4x
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快进来,
2x+x/3=4.2
2x-4/3=4x
2x+x/3=4.2
2x-4/3=4x
![快进来,2x+x/3=4.22x-4/3=4x](/uploads/image/z/19068468-60-8.jpg?t=%E5%BF%AB%E8%BF%9B%E6%9D%A5%2C2x%2Bx%2F3%3D4.22x-4%2F3%3D4x)
2x+x/3=4.2
(2+1/3)x=4.2
7/3×x=4.2
x=4.2÷(7/3)
x=1.8
2x-4/3=4x
4x-2x=-4/3
(4-2)x=-4/3
2x=-4/3
x=-4/3÷2
x=-2/3
(2+1/3)x=4.2
7/3×x=4.2
x=4.2÷(7/3)
x=1.8
2x-4/3=4x
4x-2x=-4/3
(4-2)x=-4/3
2x=-4/3
x=-4/3÷2
x=-2/3
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