4x+9=7x+72

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Solution for 4x+9=7x+72 equation: 



4x+9=7x+72

We move all terms to the left:

4x+9-(7x+72)=0

We get rid of parentheses

4x-7x-72+9=0

We add all the numbers together, and all the variables

-3x-63=0

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

-3x=63

x=63/-3

x=-21

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