7x+18=10x+21

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Solution for 7x+18=10x+21 equation: 



7x+18=10x+21

We move all terms to the left:

7x+18-(10x+21)=0

We get rid of parentheses

7x-10x-21+18=0

We add all the numbers together, and all the variables

-3x-3=0

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

-3x=3

x=3/-3

x=-1

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