100-9x=28

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Solution for 100-9x=28 equation: 



100-9x=28

We move all terms to the left:

100-9x-(28)=0

We add all the numbers together, and all the variables

-9x+72=0

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

-9x=-72

x=-72/-9

x=+8

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