5(9+x)=80

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Solution for 5(9+x)=80 equation: 



5(9+x)=80

We move all terms to the left:

5(9+x)-(80)=0

We add all the numbers together, and all the variables

5(x+9)-80=0

We multiply parentheses

5x+45-80=0

We add all the numbers together, and all the variables

5x-35=0

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

5x=35

x=35/5

x=7

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