45+x=30+3x

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Solution for 45+x=30+3x equation: 



45+x=30+3x

We move all terms to the left:

45+x-(30+3x)=0

We add all the numbers together, and all the variables

x-(3x+30)+45=0

We get rid of parentheses

x-3x-30+45=0

We add all the numbers together, and all the variables

-2x+15=0

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

-2x=-15

x=-15/-2

x=7+1/2

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