10(10+x)=9(9+21

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Solution for 10(10+x)=9(9+21 equation: 



10(10+x)=9(9+21

We move all terms to the left:

10(10+x)-(9(9+21)=0

We add all the numbers together, and all the variables

10(x+10)-(930=0

We add all the numbers together, and all the variables

10(x+10)=0

We multiply parentheses

10x+100=0

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

10x=-100

x=-100/10

x=-10

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