245=105-7x

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Solution for 245=105-7x equation: 



245=105-7x

We move all terms to the left:

245-(105-7x)=0

We add all the numbers together, and all the variables

-(-7x+105)+245=0

We get rid of parentheses

7x-105+245=0

We add all the numbers together, and all the variables

7x+140=0

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

7x=-140

x=-140/7

x=-20

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