7x+28-7=9x-18-

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Solution for 7x+28-7=9x-18- equation: 



7x+28-7=9x-18-

We move all terms to the left:

7x+28-7-(9x-18-)=0

We add all the numbers together, and all the variables

7x-(+9x)+28-7=0

We add all the numbers together, and all the variables

7x-(+9x)+21=0

We get rid of parentheses

7x-9x+21=0

We add all the numbers together, and all the variables

-2x+21=0

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

-2x=-21

x=-21/-2

x=10+1/2

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