9(13-x)-5x=5(21-2x)+9x

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Solution for 9(13-x)-5x=5(21-2x)+9x equation: 



9(13-x)-5x=5(21-2x)+9x

We move all terms to the left:

9(13-x)-5x-(5(21-2x)+9x)=0

We add all the numbers together, and all the variables

9(-1x+13)-5x-(5(-2x+21)+9x)=0

We add all the numbers together, and all the variables

-5x+9(-1x+13)-(5(-2x+21)+9x)=0

We multiply parentheses

-5x-9x-(5(-2x+21)+9x)+117=0



We calculate terms in parentheses: -(5(-2x+21)+9x), so:

5(-2x+21)+9x

We add all the numbers together, and all the variables

9x+5(-2x+21)

We multiply parentheses

9x-10x+105

We add all the numbers together, and all the variables

-1x+105

Back to the equation:

-(-1x+105)



We add all the numbers together, and all the variables

-14x-(-1x+105)+117=0

We get rid of parentheses

-14x+1x-105+117=0

We add all the numbers together, and all the variables

-13x+12=0

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

-13x=-12

x=-12/-13

x=12/13

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