(2x+21)+(5x)=0

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Solution for (2x+21)+(5x)=0 equation: 



(2x+21)+(5x)=0

We add all the numbers together, and all the variables

5x+(2x+21)=0

We get rid of parentheses

5x+2x+21=0

We add all the numbers together, and all the variables

7x+21=0

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

7x=-21

x=-21/7

x=-3

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