7x+21=4x+5

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Solution for 7x+21=4x+5 equation: 



7x+21=4x+5

We move all terms to the left:

7x+21-(4x+5)=0

We get rid of parentheses

7x-4x-5+21=0

We add all the numbers together, and all the variables

3x+16=0

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

3x=-16

x=-16/3

x=-5+1/3

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