(6+9)*(8-x)=30

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Solution for (6+9)*(8-x)=30 equation: 



(6+9)(8-x)=30

We move all terms to the left:

(6+9)(8-x)-(30)=0

We add all the numbers together, and all the variables

15(-1x+8)-30=0

We multiply parentheses

-15x+120-30=0

We add all the numbers together, and all the variables

-15x+90=0

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

-15x=-90

x=-90/-15

x=+6

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