30=3x+4x-5

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Solution for 30=3x+4x-5 equation: 



30=3x+4x-5

We move all terms to the left:

30-(3x+4x-5)=0

We add all the numbers together, and all the variables

-(7x-5)+30=0

We get rid of parentheses

-7x+5+30=0

We add all the numbers together, and all the variables

-7x+35=0

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

-7x=-35

x=-35/-7

x=+5

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