7x+9=2x-16x

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Solution for 7x+9=2x-16x equation: 



7x+9=2x-16x

We move all terms to the left:

7x+9-(2x-16x)=0

We add all the numbers together, and all the variables

7x-(-14x)+9=0

We get rid of parentheses

7x+14x+9=0

We add all the numbers together, and all the variables

21x+9=0

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

21x=-9

x=-9/21

x=-3/7

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