7x+12(10000-x)=90000

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Solution for 7x+12(10000-x)=90000 equation: 



7x+12(10000-x)=90000

We move all terms to the left:

7x+12(10000-x)-(90000)=0

We add all the numbers together, and all the variables

7x+12(-1x+10000)-90000=0

We multiply parentheses

7x-12x+120000-90000=0

We add all the numbers together, and all the variables

-5x+30000=0

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

-5x=-30000

x=-30000/-5

x=+6000

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