20x+9=4x-7

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Solution for 20x+9=4x-7 equation: 



20x+9=4x-7

We move all terms to the left:

20x+9-(4x-7)=0

We get rid of parentheses

20x-4x+7+9=0

We add all the numbers together, and all the variables

16x+16=0

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

16x=-16

x=-16/16

x=-1

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