7x+15=3x-45

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Solution for 7x+15=3x-45 equation: 



7x+15=3x-45

We move all terms to the left:

7x+15-(3x-45)=0

We get rid of parentheses

7x-3x+45+15=0

We add all the numbers together, and all the variables

4x+60=0

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

4x=-60

x=-60/4

x=-15

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