8x+x=900

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Solution for 8x+x=900 equation: 



8x+x=900

We move all terms to the left:

8x+x-(900)=0

We add all the numbers together, and all the variables

9x-900=0

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

9x=900

x=900/9

x=100

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