2x-21=7x+19

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Solution for 2x-21=7x+19 equation: 



2x-21=7x+19

We move all terms to the left:

2x-21-(7x+19)=0

We get rid of parentheses

2x-7x-19-21=0

We add all the numbers together, and all the variables

-5x-40=0

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

-5x=40

x=40/-5

x=-8

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