3x(3+-4)=20

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Solution for 3x(3+-4)=20 equation: 



3x(3+-4)=20

We move all terms to the left:

3x(3+-4)-(20)=0

We add all the numbers together, and all the variables

3x(-1)-20=0

We multiply parentheses

-3x-20=0

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

-3x=20

x=20/-3

x=-6+2/3

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