12x+30(75-x)=1800

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Solution for 12x+30(75-x)=1800 equation: 



12x+30(75-x)=1800

We move all terms to the left:

12x+30(75-x)-(1800)=0

We add all the numbers together, and all the variables

12x+30(-1x+75)-1800=0

We multiply parentheses

12x-30x+2250-1800=0

We add all the numbers together, and all the variables

-18x+450=0

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

-18x=-450

x=-450/-18

x=+25

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