x15=-x7

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Solution for x15=-x7 equation: 



x15=-x7

We move all terms to the left:

x15-(-x7)=0

We add all the numbers together, and all the variables

-(-1x^7)+x15=0

We add all the numbers together, and all the variables

x^15-(-1x^7)=0

We get rid of parentheses

x^15+1x^7=0

We do not support expression: x^15

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