4(x+9)=10(x-9)

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Solution for 4(x+9)=10(x-9) equation: 



4(x+9)=10(x-9)

We move all terms to the left:

4(x+9)-(10(x-9))=0

We multiply parentheses

4x-(10(x-9))+36=0



We calculate terms in parentheses: -(10(x-9)), so:

10(x-9)

We multiply parentheses

10x-90

Back to the equation:

-(10x-90)



We get rid of parentheses

4x-10x+90+36=0

We add all the numbers together, and all the variables

-6x+126=0

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

-6x=-126

x=-126/-6

x=+21

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