7x+21=5x

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Solution for 7x+21=5x equation: 



7x+21=5x

We move all terms to the left:

7x+21-(5x)=0

We add all the numbers together, and all the variables

2x+21=0

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

2x=-21

x=-21/2

x=-10+1/2

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