4(5-x)=9(x+8)

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Solution for 4(5-x)=9(x+8) equation: 



4(5-x)=9(x+8)

We move all terms to the left:

4(5-x)-(9(x+8))=0

We add all the numbers together, and all the variables

4(-1x+5)-(9(x+8))=0

We multiply parentheses

-4x-(9(x+8))+20=0



We calculate terms in parentheses: -(9(x+8)), so:

9(x+8)

We multiply parentheses

9x+72

Back to the equation:

-(9x+72)



We get rid of parentheses

-4x-9x-72+20=0

We add all the numbers together, and all the variables

-13x-52=0

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

-13x=52

x=52/-13

x=-4

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