8+x(X)=90

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Solution for 8+x(X)=90 equation: 



8+x(x)=90

We move all terms to the left:

8+x(x)-(90)=0

We add all the numbers together, and all the variables

xx-82=0

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

xx=82

x=82/1

x=82

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