-4x+20+x+40=90

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Solution for -4x+20+x+40=90 equation: 



-4x+20+x+40=90

We move all terms to the left:

-4x+20+x+40-(90)=0

We add all the numbers together, and all the variables

-3x-30=0

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

-3x=30

x=30/-3

x=-10

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