7x=21+5x-3

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Solution for 7x=21+5x-3 equation: 



7x=21+5x-3

We move all terms to the left:

7x-(21+5x-3)=0

We add all the numbers together, and all the variables

7x-(5x+18)=0

We get rid of parentheses

7x-5x-18=0

We add all the numbers together, and all the variables

2x-18=0

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

2x=18

x=18/2

x=9

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