4x(-1)+9=20

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Solution for 4x(-1)+9=20 equation: 



4x(-1)+9=20

We move all terms to the left:

4x(-1)+9-(20)=0

We add all the numbers together, and all the variables

4x(-1)-11=0

We multiply parentheses

-4x-11=0

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

-4x=11

x=11/-4

x=-2+3/4

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