x-0.13x=400

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Solution for x-0.13x=400 equation: 



x-0.13x=400

We move all terms to the left:

x-0.13x-(400)=0

We add all the numbers together, and all the variables

0.87x-400=0

We move all terms containing x to the left, all other terms to the right

0.87x=400

x=400/0.87

x=459+0.67000000000002/0.87

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