5x+9=81-15x

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Solution for 5x+9=81-15x equation: 



5x+9=81-15x

We move all terms to the left:

5x+9-(81-15x)=0

We add all the numbers together, and all the variables

5x-(-15x+81)+9=0

We get rid of parentheses

5x+15x-81+9=0

We add all the numbers together, and all the variables

20x-72=0

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

20x=72

x=72/20

x=3+3/5

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