4(x +3.8)=5.2x-21.4快

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4(x +3.8)=5.2x-21.4快
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4(x +3.8)=5.2x-21.4快
4(x +3.8)=5.2x-21.4

4(x +3.8)=5.2x-21.4快
4(x +3.8) = 5.2x-21.4
4x +15.2 =5.2x - 21.4
5.2x - 4x = 15.2 +21.4
1.2x = 36.6
x = 30.5